diff --git a/third_party/SingleApplication-3.3.2/singleapplication.cpp b/third_party/SingleApplication-3.3.2/singleapplication.cpp
deleted file mode 100644
index 09e264ef..00000000
--- a/third_party/SingleApplication-3.3.2/singleapplication.cpp
+++ /dev/null
@@ -1,271 +0,0 @@
-// The MIT License (MIT)
-//
-// Copyright (c) Itay Grudev 2015 - 2020
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
-
-#include <QtCore/QElapsedTimer>
-#include <QtCore/QByteArray>
-#include <QtCore/QSharedMemory>
-
-#include "singleapplication.h"
-#include "singleapplication_p.h"
-
-/**
- * @brief Constructor. Checks and fires up LocalServer or closes the program
- * if another instance already exists
- * @param argc
- * @param argv
- * @param allowSecondary Whether to enable secondary instance support
- * @param options Optional flags to toggle specific behaviour
- * @param timeout Maximum time blocking functions are allowed during app load
- */
-SingleApplication::SingleApplication( int &argc, char *argv[], bool allowSecondary, Options options, int timeout, const QString &userData )
- : app_t( argc, argv ), d_ptr( new SingleApplicationPrivate( this ) )
-{
- Q_D( SingleApplication );
-
-#if defined(Q_OS_ANDROID) || defined(Q_OS_IOS)
- // On Android and iOS since the library is not supported fallback to
- // standard QApplication behaviour by simply returning at this point.
- qWarning() << "SingleApplication is not supported on Android and iOS systems.";
- return;
-#endif
-
- // Store the current mode of the program
- d->options = options;
-
- // Add any unique user data
- if ( ! userData.isEmpty() )
- d->addAppData( userData );
-
- // Generating an application ID used for identifying the shared memory
- // block and QLocalServer
- d->genBlockServerName();
-
- // To mitigate QSharedMemory issues with large amount of processes
- // attempting to attach at the same time
- SingleApplicationPrivate::randomSleep();
-
-#ifdef Q_OS_UNIX
- // By explicitly attaching it and then deleting it we make sure that the
- // memory is deleted even after the process has crashed on Unix.
- d->memory = new QSharedMemory( d->blockServerName );
- d->memory->attach();
- delete d->memory;
-#endif
- // Guarantee thread safe behaviour with a shared memory block.
- d->memory = new QSharedMemory( d->blockServerName );
-
- // Create a shared memory block
- if( d->memory->create( sizeof( InstancesInfo ) )){
- // Initialize the shared memory block
- if( ! d->memory->lock() ){
- qCritical() << "SingleApplication: Unable to lock memory block after create.";
- abortSafely();
- }
- d->initializeMemoryBlock();
- } else {
- if( d->memory->error() == QSharedMemory::AlreadyExists ){
- // Attempt to attach to the memory segment
- if( ! d->memory->attach() ){
- qCritical() << "SingleApplication: Unable to attach to shared memory block.";
- abortSafely();
- }
- if( ! d->memory->lock() ){
- qCritical() << "SingleApplication: Unable to lock memory block after attach.";
- abortSafely();
- }
- } else {
- qCritical() << "SingleApplication: Unable to create block.";
- abortSafely();
- }
- }
-
- auto *inst = static_cast<InstancesInfo*>( d->memory->data() );
- QElapsedTimer time;
- time.start();
-
- // Make sure the shared memory block is initialised and in consistent state
- while( true ){
- // If the shared memory block's checksum is valid continue
- if( d->blockChecksum() == inst->checksum ) break;
-
- // If more than 5s have elapsed, assume the primary instance crashed and
- // assume it's position
- if( time.elapsed() > 5000 ){
- qWarning() << "SingleApplication: Shared memory block has been in an inconsistent state from more than 5s. Assuming primary instance failure.";
- d->initializeMemoryBlock();
- }
-
- // Otherwise wait for a random period and try again. The random sleep here
- // limits the probability of a collision between two racing apps and
- // allows the app to initialise faster
- if( ! d->memory->unlock() ){
- qDebug() << "SingleApplication: Unable to unlock memory for random wait.";
- qDebug() << d->memory->errorString();
- }
- SingleApplicationPrivate::randomSleep();
- if( ! d->memory->lock() ){
- qCritical() << "SingleApplication: Unable to lock memory after random wait.";
- abortSafely();
- }
- }
-
- if( inst->primary == false ){
- d->startPrimary();
- if( ! d->memory->unlock() ){
- qDebug() << "SingleApplication: Unable to unlock memory after primary start.";
- qDebug() << d->memory->errorString();
- }
- return;
- }
-
- // Check if another instance can be started
- if( allowSecondary ){
- d->startSecondary();
- if( d->options & Mode::SecondaryNotification ){
- d->connectToPrimary( timeout, SingleApplicationPrivate::SecondaryInstance );
- }
- if( ! d->memory->unlock() ){
- qDebug() << "SingleApplication: Unable to unlock memory after secondary start.";
- qDebug() << d->memory->errorString();
- }
- return;
- }
-
- if( ! d->memory->unlock() ){
- qDebug() << "SingleApplication: Unable to unlock memory at end of execution.";
- qDebug() << d->memory->errorString();
- }
-
- d->connectToPrimary( timeout, SingleApplicationPrivate::NewInstance );
-
- delete d;
-
- ::exit( EXIT_SUCCESS );
-}
-
-SingleApplication::~SingleApplication()
-{
- Q_D( SingleApplication );
- delete d;
-}
-
-/**
- * Checks if the current application instance is primary.
- * @return Returns true if the instance is primary, false otherwise.
- */
-bool SingleApplication::isPrimary() const
-{
- Q_D( const SingleApplication );
- return d->server != nullptr;
-}
-
-/**
- * Checks if the current application instance is secondary.
- * @return Returns true if the instance is secondary, false otherwise.
- */
-bool SingleApplication::isSecondary() const
-{
- Q_D( const SingleApplication );
- return d->server == nullptr;
-}
-
-/**
- * Allows you to identify an instance by returning unique consecutive instance
- * ids. It is reset when the first (primary) instance of your app starts and
- * only incremented afterwards.
- * @return Returns a unique instance id.
- */
-quint32 SingleApplication::instanceId() const
-{
- Q_D( const SingleApplication );
- return d->instanceNumber;
-}
-
-/**
- * Returns the OS PID (Process Identifier) of the process running the primary
- * instance. Especially useful when SingleApplication is coupled with OS.
- * specific APIs.
- * @return Returns the primary instance PID.
- */
-qint64 SingleApplication::primaryPid() const
-{
- Q_D( const SingleApplication );
- return d->primaryPid();
-}
-
-/**
- * Returns the username the primary instance is running as.
- * @return Returns the username the primary instance is running as.
- */
-QString SingleApplication::primaryUser() const
-{
- Q_D( const SingleApplication );
- return d->primaryUser();
-}
-
-/**
- * Returns the username the current instance is running as.
- * @return Returns the username the current instance is running as.
- */
-QString SingleApplication::currentUser() const
-{
- return SingleApplicationPrivate::getUsername();
-}
-
-/**
- * Sends message to the Primary Instance.
- * @param message The message to send.
- * @param timeout the maximum timeout in milliseconds for blocking functions.
- * @return true if the message was sent successfuly, false otherwise.
- */
-bool SingleApplication::sendMessage( const QByteArray &message, int timeout )
-{
- Q_D( SingleApplication );
-
- // Nobody to connect to
- if( isPrimary() ) return false;
-
- // Make sure the socket is connected
- if( ! d->connectToPrimary( timeout, SingleApplicationPrivate::Reconnect ) )
- return false;
-
- return d->writeConfirmedMessage( timeout, message );
-}
-
-/**
- * Cleans up the shared memory block and exits with a failure.
- * This function halts program execution.
- */
-void SingleApplication::abortSafely()
-{
- Q_D( SingleApplication );
-
- qCritical() << "SingleApplication: " << d->memory->error() << d->memory->errorString();
- delete d;
- ::exit( EXIT_FAILURE );
-}
-
-QStringList SingleApplication::userData() const
-{
- Q_D( const SingleApplication );
- return d->appData();
-}
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