3 files changed, 1 insertions, 16 deletions
diff --git a/crypto/test/src/security/test/TestDotNetUtil.cs b/crypto/test/src/security/test/TestDotNetUtil.cs
index e2bb783ef..82cad46f1 100644
--- a/crypto/test/src/security/test/TestDotNetUtil.cs
+++ b/crypto/test/src/security/test/TestDotNetUtil.cs
@@ -1,5 +1,4 @@
 using System;
-using System.Collections;
 using System.Collections.Generic;
 using System.Security.Cryptography;
 using SystemX509 = System.Security.Cryptography.X509Certificates;
diff --git a/crypto/test/src/security/test/TestEncodings.cs b/crypto/test/src/security/test/TestEncodings.cs
index d83b2dda5..330054e84 100644
--- a/crypto/test/src/security/test/TestEncodings.cs
+++ b/crypto/test/src/security/test/TestEncodings.cs
@@ -1,15 +1,11 @@
 using System;
-using System.Collections;
-using System.Text;
 
 using NUnit.Framework;
 
 using Org.BouncyCastle.Asn1.Pkcs;
 using Org.BouncyCastle.Asn1.X509;
 using Org.BouncyCastle.Crypto;
-using Org.BouncyCastle.Crypto.Generators;
 using Org.BouncyCastle.Crypto.Parameters;
-using Org.BouncyCastle.Crypto.Signers;
 using Org.BouncyCastle.Math;
 using Org.BouncyCastle.Math.EC;
 using Org.BouncyCastle.Pkcs;
diff --git a/crypto/test/src/security/test/TestSignerUtil.cs b/crypto/test/src/security/test/TestSignerUtil.cs
index f075526b0..2c569d030 100644
--- a/crypto/test/src/security/test/TestSignerUtil.cs
+++ b/crypto/test/src/security/test/TestSignerUtil.cs
@@ -1,20 +1,13 @@
 using System;
-using System.Collections;
-using System.Globalization;
-using System.Text;
 
 using NUnit.Framework;
 
 using Org.BouncyCastle.Asn1.CryptoPro;
-using Org.BouncyCastle.Asn1.Pkcs;
-using Org.BouncyCastle.Asn1.X509;
 using Org.BouncyCastle.Math;
 using Org.BouncyCastle.Math.EC;
 using Org.BouncyCastle.Crypto;
 using Org.BouncyCastle.Crypto.Generators;
 using Org.BouncyCastle.Crypto.Parameters;
-using Org.BouncyCastle.Crypto.Signers;
-using Org.BouncyCastle.Utilities;
 using Org.BouncyCastle.Utilities.Encoders;
 
 namespace Org.BouncyCastle.Security.Tests
@@ -142,11 +135,8 @@ namespace Org.BouncyCastle.Security.Tests
             {
                 ISigner signer = SignerUtilities.GetSigner(algorithm);
 
-#if PORTABLE
                 string upper = algorithm.ToUpperInvariant();
-#else
-                string upper = algorithm.ToUpper(CultureInfo.InvariantCulture);
-#endif
+
                 int withPos = upper.LastIndexOf("WITH");
 
                 string cipherName = withPos < 0