[SourceKit] Remove performCompletionLikeOperation

All users of `performCodeCompletionLikeOperation` have been migrated to dedicated methods on `CompletionInstance`.

Author: ahoppen

tools/SourceKit/lib/SwiftLang/SwiftLangSupport.cpp

@@ -1069,26 +1069,6 @@ void SwiftLangSupport::performWithParamsToCompletionLikeOperation(
       CancellableResult<CompletionLikeOperationParams>::success(Params));
 }
 
-void SwiftLangSupport::performCompletionLikeOperation(
-    llvm::MemoryBuffer *UnresolvedInputFile, unsigned Offset,
-    ArrayRef<const char *> Args,
-    llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> FileSystem,
-    llvm::function_ref<void(CancellableResult<CompletionInstanceResult>)>
-        Callback) {
-  performWithParamsToCompletionLikeOperation(
-      UnresolvedInputFile, Offset, Args, FileSystem,
-      [&](CancellableResult<CompletionLikeOperationParams> ParamsResult) {
-        ParamsResult.mapAsync<CompletionInstanceResult>(
-            [&](auto &CIParams, auto DeliverTransformed) {
-              getCompletionInstance()->performOperation(
-                  CIParams.Invocation, Args, FileSystem,
-                  CIParams.completionBuffer, Offset, CIParams.DiagC,
-                  DeliverTransformed);
-            },
-            Callback);
-      });
-}
-
 CloseClangModuleFiles::~CloseClangModuleFiles() {
   clang::Preprocessor &PP = loader.getClangPreprocessor();
   clang::ModuleMap &ModMap = PP.getHeaderSearchInfo().getModuleMap();

tools/SourceKit/lib/SwiftLang/SwiftLangSupport.h

@@ -462,17 +462,6 @@ class SwiftLangSupport : public LangSupport {
   /// returns the original path;
   static std::string resolvePathSymlinks(StringRef FilePath);
 
-  /// Perform a completion like operation. It initializes a \c CompilerInstance,
-  /// the calls \p Callback with it. \p Callback must perform the second pass
-  /// using that instance.
-  void performCompletionLikeOperation(
-      llvm::MemoryBuffer *UnresolvedInputFile, unsigned Offset,
-      ArrayRef<const char *> Args,
-      llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> FileSystem,
-      llvm::function_ref<void(
-          swift::ide::CancellableResult<swift::ide::CompletionInstanceResult>)>
-          Callback);
-
   /// The result returned from \c performWithParamsToCompletionLikeOperation.
   struct CompletionLikeOperationParams {
     swift::CompilerInvocation &Invocation;