Remove unused code fix methods (#78133)

Author: CyrusNajmabadi

src/LanguageServer/Protocol/Features/CodeFixes/CodeFixService.cs

@@ -332,9 +332,6 @@ private static SortedDictionary<TextSpan, List<DiagnosticData>> ConvertToMap(
         return null;
     }
 
-    public Task<TDocument> ApplyCodeFixesForSpecificDiagnosticIdAsync<TDocument>(TDocument document, string diagnosticId, IProgress<CodeAnalysisProgress> progressTracker, CancellationToken cancellationToken) where TDocument : TextDocument
-        => ApplyCodeFixesForSpecificDiagnosticIdAsync(document, diagnosticId, DiagnosticSeverity.Hidden, progressTracker, cancellationToken);
-
     public async Task<TDocument> ApplyCodeFixesForSpecificDiagnosticIdAsync<TDocument>(
         TDocument document,
         string diagnosticId,

src/LanguageServer/Protocol/Features/CodeFixes/ICodeFixService.cs

@@ -40,7 +40,4 @@ public static Task<ImmutableArray<CodeFixCollection>> GetFixesAsync(this ICodeFi
 
     public static Task<ImmutableArray<CodeFixCollection>> GetFixesAsync(this ICodeFixService service, TextDocument document, TextSpan textSpan, ICodeActionRequestPriorityProvider priorityProvider, CancellationToken cancellationToken)
         => service.StreamFixesAsync(document, textSpan, priorityProvider, cancellationToken).ToImmutableArrayAsync(cancellationToken);
-
-    public static Task<TDocument> ApplyCodeFixesForSpecificDiagnosticIdAsync<TDocument>(this ICodeFixService service, TDocument document, string diagnosticId, IProgress<CodeAnalysisProgress> progressTracker, CancellationToken cancellationToken) where TDocument : TextDocument
-        => service.ApplyCodeFixesForSpecificDiagnosticIdAsync(document, diagnosticId, DiagnosticSeverity.Hidden, progressTracker, cancellationToken);
 }