remove redundant null checks

src/Adapter/MSTestAdapter.PlatformServices/AssemblyResolver.cs

@@ -159,11 +159,6 @@ public void Dispose()
     void AddSearchDirectoriesFromRunSetting(List<RecursiveDirectoryPath> recursiveDirectoryPath)
     {
         // Enqueue elements from the list in Queue
-        if (recursiveDirectoryPath == null)
-        {
-            return;
-        }
-
         foreach (RecursiveDirectoryPath recPath in recursiveDirectoryPath)
         {
             _directoryList.Enqueue(recPath);

src/Adapter/MSTestAdapter.PlatformServices/Services/TestContextImplementation.cs

@@ -255,13 +255,7 @@
     /// <returns>True if found.</returns>
     public bool TryGetPropertyValue(string propertyName, out object? propertyValue)
     {
-        if (_properties == null)
-        {
-            propertyValue = null;
-            return false;
-        }
-
         return _properties.TryGetValue(propertyName, out propertyValue);
     }
 
     /// <summary>

src/Analyzers/MSTest.Analyzers.CodeFixes/TestMethodShouldBeValidCodeFix.cs

@@ -109,8 +109,7 @@ private static async Task<Solution> FixTestMethodAsync(Document document, Method
         INamedTypeSymbol? taskSymbol = wellKnownTypeProvider.GetOrCreateTypeByMetadataName(WellKnownTypeNames.SystemThreadingTasksTask);
         INamedTypeSymbol? valueTaskSymbol = wellKnownTypeProvider.GetOrCreateTypeByMetadataName(WellKnownTypeNames.SystemThreadingTasksValueTask);
 
-        if (newMethodDeclaration.ReturnType != null &&
-            !newMethodDeclaration.ReturnType.IsVoid() &&
+        if (!newMethodDeclaration.ReturnType.IsVoid() &&
             (taskSymbol == null || !semanticModel.ClassifyConversion(methodDeclaration.ReturnType, taskSymbol).IsImplicit) &&
             (valueTaskSymbol == null || !semanticModel.ClassifyConversion(methodDeclaration.ReturnType, valueTaskSymbol).IsImplicit))
         {

src/Platform/Microsoft.Testing.Extensions.VSTestBridge/ObjectModel/ContextAdapterBase.cs

@@ -24,7 +24,6 @@ protected ContextAdapterBase(ICommandLineOptions commandLineOptions, IRunSetting
         if (commandLineOptions.TryGetOptionArgumentList(
             TestCaseFilterCommandLineOptionsProvider.TestCaseFilterOptionName,
             out string[]? filterExpressions)
-            && filterExpressions is not null
             && filterExpressions.Length == 1)
         {
             filterFromCommandLineOption = filterExpressions[0];

src/Platform/Microsoft.Testing.Platform/Services/StopPoliciesService.cs

@@ -33,10 +33,6 @@ public async Task ExecuteMaxFailedTestsCallbacksAsync(int maxFailedTests, Cancel
     {
         _lastMaxFailedTests = maxFailedTests;
         IsMaxFailedTestsTriggered = true;
-        if (_maxFailedTestsCallbacks is null)
-        {
-            return;
-        }
 
         foreach (Func<int, CancellationToken, Task> callback in _maxFailedTestsCallbacks)
         {

src/Platform/Microsoft.Testing.Platform/Telemetry/TelemetryManager.cs

@@ -101,12 +101,9 @@ private async Task ShowTelemetryBannerFirstNoticeAsync(ServiceProvider servicePr
 
         ITestApplicationModuleInfo testApplicationModuleInfo = serviceProvider.GetTestApplicationModuleInfo();
 #pragma warning disable RS0030 // Do not use banned APIs - There is no easy way to disable it for all members
-        string? directory = environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData, Environment.SpecialFolderOption.Create);
+        string directory = environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData, Environment.SpecialFolderOption.Create);
 #pragma warning restore RS0030 // Do not use banned APIs
-        if (directory is not null)
-        {
-            directory = Path.Combine(directory, "Microsoft", "TestingPlatform");
-        }
+        directory = Path.Combine(directory, "Microsoft", "TestingPlatform");
 
         IFileSystem fileSystem = serviceProvider.GetFileSystem();
         string fileName = testApplicationModuleInfo.TryGetCurrentTestApplicationFullPath() is { } testApplicationFullPath