Unused "using" directive; made two methods static.

Author: RichardD2

test/EntityFrameworkCore.DataEncryption.Test/Migration/MigratorBaseTest.cs

@@ -3,7 +3,6 @@
 using System.Linq;
 using System.Threading.Tasks;
 using Bogus;
-using Microsoft.EntityFrameworkCore.DataEncryption;
 using Microsoft.EntityFrameworkCore.DataEncryption.Migration;
 using Microsoft.EntityFrameworkCore.DataEncryption.Test.Context;
 using Xunit;
@@ -24,7 +23,7 @@ protected MigratorBaseTest()
                 }).ToList();
         }
 
-        private void AssertAuthor(AuthorEntity expected, AuthorEntity actual)
+        private static void AssertAuthor(AuthorEntity expected, AuthorEntity actual)
         {
             Assert.NotNull(actual);
             Assert.Equal(expected.FirstName, actual.FirstName);

test/EntityFrameworkCore.DataEncryption.Test/Migration/V1ToV2MigratorTest.cs

@@ -11,7 +11,6 @@ public class V1ToV2MigratorTest : MigratorBaseTest
         [Fact]
         public async Task MigrateV1ToV2Test()
         {
-            string databaseName = $"{Guid.NewGuid()}.db";
             var aesKeys = AesProvider.GenerateKey(AesKeySize.AES256Bits);
             var sourceProvider = new AesProvider(aesKeys.Key, aesKeys.IV);
             var destinationProvider = new AesProvider(aesKeys.Key);

test/EntityFrameworkCore.DataEncryption.Test/Providers/AesProviderTest.cs

@@ -92,7 +92,7 @@ public void EncryptUsingAes256Provider()
             ExecuteAesEncryptionTest<Aes256EncryptedDatabaseContext>(AesKeySize.AES256Bits);
         }
 
-        private void ExecuteAesEncryptionTest<TContext>(AesKeySize aesKeyType) where TContext : DatabaseContext
+        private static void ExecuteAesEncryptionTest<TContext>(AesKeySize aesKeyType) where TContext : DatabaseContext
         {
             AesKeyInfo encryptionKeyInfo = AesProvider.GenerateKey(aesKeyType);
             var provider = new AesProvider(encryptionKeyInfo.Key, CipherMode.CBC, PaddingMode.Zeros);