Simplify

Author: CyrusNajmabadi

src/Features/Core/Portable/QuickInfo/CommonSemanticQuickInfoProvider.cs

@@ -6,15 +6,12 @@
 using System.Collections.Immutable;
 using System.Diagnostics.CodeAnalysis;
 using System.Linq;
-using System.Linq.Expressions;
 using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.CodeAnalysis.Editing;
-using Microsoft.CodeAnalysis.GenerateMember.GenerateVariable;
 using Microsoft.CodeAnalysis.Host;
 using Microsoft.CodeAnalysis.LanguageService;
 using Microsoft.CodeAnalysis.PooledObjects;
-using Microsoft.CodeAnalysis.Shared.Collections;
 using Microsoft.CodeAnalysis.Shared.Extensions;
 using Microsoft.CodeAnalysis.Shared.Utilities;
 using Roslyn.Utilities;