Remove unnecessary imports (#77481)

Author: CyrusNajmabadi

src/Analyzers/CSharp/Analyzers/AddAccessibilityModifiers/CSharpAddAccessibilityModifiers.cs

@@ -8,7 +8,6 @@
 using Microsoft.CodeAnalysis.CSharp.Syntax;
 using Microsoft.CodeAnalysis.LanguageService;
 using Microsoft.CodeAnalysis.Shared.Extensions;
-using Roslyn.Utilities;
 
 namespace Microsoft.CodeAnalysis.CSharp.AddOrRemoveAccessibilityModifiers;
 

src/Analyzers/CSharp/Analyzers/AddBraces/CSharpAddBracesDiagnosticAnalyzer.cs

@@ -11,7 +11,6 @@
 using Microsoft.CodeAnalysis.Diagnostics;
 using Microsoft.CodeAnalysis.Shared.Extensions;
 using Microsoft.CodeAnalysis.Text;
-using Roslyn.Utilities;
 using FormattingRangeHelper = Microsoft.CodeAnalysis.CSharp.Utilities.FormattingRangeHelper;
 
 namespace Microsoft.CodeAnalysis.CSharp.Diagnostics.AddBraces;

src/Analyzers/CSharp/Analyzers/AddRequiredParentheses/CSharpAddRequiredExpressionParenthesesDiagnosticAnalyzer.cs

@@ -9,7 +9,6 @@
 using Microsoft.CodeAnalysis.CSharp.Precedence;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
 using Microsoft.CodeAnalysis.Diagnostics;
-using Roslyn.Utilities;
 
 namespace Microsoft.CodeAnalysis.CSharp.AddRequiredParentheses;
 

src/Analyzers/CSharp/Analyzers/ConvertNamespace/ConvertToBlockScopedNamespaceDiagnosticAnalyzer.cs

@@ -7,7 +7,6 @@
 using Microsoft.CodeAnalysis.CSharp.CodeStyle;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
 using Microsoft.CodeAnalysis.Diagnostics;
-using Microsoft.CodeAnalysis.Options;
 using Microsoft.CodeAnalysis.Text;
 
 namespace Microsoft.CodeAnalysis.CSharp.ConvertNamespace;

src/Analyzers/CSharp/Analyzers/ConvertNamespace/ConvertToFileScopedNamespaceDiagnosticAnalyzer.cs

@@ -7,7 +7,6 @@
 using Microsoft.CodeAnalysis.CSharp.CodeStyle;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
 using Microsoft.CodeAnalysis.Diagnostics;
-using Microsoft.CodeAnalysis.Options;
 using Microsoft.CodeAnalysis.Text;
 
 namespace Microsoft.CodeAnalysis.CSharp.ConvertNamespace;

src/Analyzers/CSharp/Analyzers/ConvertSwitchStatementToExpression/ConvertSwitchStatementToExpressionDiagnosticAnalyzer.cs

@@ -7,7 +7,6 @@
 using System.Linq;
 using Microsoft.CodeAnalysis.CodeStyle;
 using Microsoft.CodeAnalysis.CSharp.CodeStyle;
-using Microsoft.CodeAnalysis.CSharp.Diagnostics;
 using Microsoft.CodeAnalysis.CSharp.Extensions;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
 using Microsoft.CodeAnalysis.Diagnostics;

src/Analyzers/CSharp/Analyzers/ConvertSwitchStatementToExpression/ConvertSwitchStatementToExpressionHelpers.cs

@@ -2,7 +2,6 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
-using Microsoft.CodeAnalysis.CSharp.Extensions;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
 
 namespace Microsoft.CodeAnalysis.CSharp.ConvertSwitchStatementToExpression;

src/Analyzers/CSharp/Analyzers/ConvertTypeofToNameof/CSharpConvertTypeOfToNameOfDiagnosticAnalyzer.cs

@@ -4,7 +4,6 @@
 
 using Microsoft.CodeAnalysis.ConvertTypeOfToNameOf;
 using Microsoft.CodeAnalysis.CSharp.Extensions;
-using Microsoft.CodeAnalysis.CSharp.Shared.Extensions;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
 using Microsoft.CodeAnalysis.Diagnostics;
 

src/Analyzers/CSharp/Analyzers/FileHeaders/CSharpFileHeaderHelper.cs

@@ -5,7 +5,6 @@
 using System;
 using Microsoft.CodeAnalysis.CSharp.LanguageService;
 using Microsoft.CodeAnalysis.FileHeaders;
-using Roslyn.Utilities;
 
 namespace Microsoft.CodeAnalysis.CSharp.FileHeaders;
 

src/Analyzers/CSharp/Analyzers/InvokeDelegateWithConditionalAccess/InvokeDelegateWithConditionalAccessAnalyzer.cs

@@ -4,7 +4,6 @@
 
 using System;
 using System.Collections.Immutable;
-using System.Threading;
 using Microsoft.CodeAnalysis.CodeStyle;
 using Microsoft.CodeAnalysis.CSharp.CodeStyle;
 using Microsoft.CodeAnalysis.CSharp.Extensions;