diff --git a/third_party/SingleApplication-3.1.3.1/singleapplication.cpp b/third_party/SingleApplication-3.1.3.1/singleapplication.cpp
deleted file mode 100644
index 9af38804..00000000
--- a/third_party/SingleApplication-3.1.3.1/singleapplication.cpp
+++ /dev/null
@@ -1,201 +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/QThread>
-#include <QtCore/QByteArray>
-#include <QtCore/QSharedMemory>
-#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
-#include <QtCore/QRandomGenerator>
-#else
-#include <QtCore/QDateTime>
-#endif
-
-#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 {bool} allowSecondaryInstances
- */
-SingleApplication::SingleApplication( int &argc, char *argv[], bool allowSecondary, Options options, int timeout )
- : 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;
-
- // Generating an application ID used for identifying the shared memory
- // block and QLocalServer
- d->genBlockServerName();
-
-#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
- d->memory->lock();
- d->initializeMemoryBlock();
- d->memory->unlock();
- } else {
- // Attempt to attach to the memory segment
- if( ! d->memory->attach() ) {
- qCritical() << "SingleApplication: Unable to attach to shared memory block.";
- qCritical() << d->memory->errorString();
- delete d;
- ::exit( EXIT_FAILURE );
- }
- }
-
- 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 ) {
- d->memory->lock();
-
- if( d->blockChecksum() == inst->checksum ) break;
-
- 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();
- }
-
- d->memory->unlock();
-
- // Random sleep here limits the probability of a collision between two racing apps
-#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
- QThread::sleep( QRandomGenerator::global()->bounded( 8u, 18u ) );
-#else
- qsrand( QDateTime::currentMSecsSinceEpoch() % std::numeric_limits<uint>::max() );
- QThread::sleep( 8 + static_cast <unsigned long>( static_cast <float>( qrand() ) / RAND_MAX * 10 ) );
-#endif
- }
-
- if( inst->primary == false) {
- d->startPrimary();
- d->memory->unlock();
- return;
- }
-
- // Check if another instance can be started
- if( allowSecondary ) {
- inst->secondary += 1;
- inst->checksum = d->blockChecksum();
- d->instanceNumber = inst->secondary;
- d->startSecondary();
- if( d->options & Mode::SecondaryNotification ) {
- d->connectToPrimary( timeout, SingleApplicationPrivate::SecondaryInstance );
- }
- d->memory->unlock();
- return;
- }
-
- d->memory->unlock();
-
- d->connectToPrimary( timeout, SingleApplicationPrivate::NewInstance );
-
- delete d;
-
- ::exit( EXIT_SUCCESS );
-}
-
-/**
- * @brief Destructor
- */
-SingleApplication::~SingleApplication()
-{
- Q_D(SingleApplication);
- delete d;
-}
-
-bool SingleApplication::isPrimary()
-{
- Q_D(SingleApplication);
- return d->server != nullptr;
-}
-
-bool SingleApplication::isSecondary()
-{
- Q_D(SingleApplication);
- return d->server == nullptr;
-}
-
-quint32 SingleApplication::instanceId()
-{
- Q_D(SingleApplication);
- return d->instanceNumber;
-}
-
-qint64 SingleApplication::primaryPid()
-{
- Q_D(SingleApplication);
- return d->primaryPid();
-}
-
-QString SingleApplication::primaryUser()
-{
- Q_D(SingleApplication);
- return d->primaryUser();
-}
-
-QString SingleApplication::currentUser()
-{
- Q_D(SingleApplication);
- return d->getUsername();
-}
-
-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
- d->connectToPrimary( timeout, SingleApplicationPrivate::Reconnect );
-
- d->socket->write( message );
- bool dataWritten = d->socket->waitForBytesWritten( timeout );
- d->socket->flush();
- return dataWritten;
-}
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