[clangd] Remove unused variables

[malaperle]

Summary

Signed-off-by: Marc-Andre Laperle <[e-mail]>

[ioeric]

fyi, you could actually accept your own patch phab (e.g. when you would like post-commit review) :P

clangd/ClangdServer.cpp

auto Action = [](decltype(Callback) Callback,
     Callback(Result);
   };
 
   WorkScheduler.runWithAST("DumpAST", File, Bind(Action, std::move(Callback)));
 }
 
 void ClangdServer::findDefinitions(PathRef File, Position Pos,
                                    Callback<std::vector<Location>> CB) {
-  auto FS = FSProvider.getFileSystem();
-  auto Action = [Pos, FS, this](Callback<std::vector<Location>> CB,
-                                llvm::Expected<InputsAndAST> InpAST) {
+  auto Action = [Pos, this](Callback<std::vector<Location>> CB,
     if (!InpAST)
       return CB(InpAST.takeError());
     CB(clangd::findDefinitions(InpAST->AST, Pos, this->FileIdx.get()));
   };
 
   WorkScheduler.runWithAST("Definitions", File, Bind(Action, std::move(CB)));
 }
 
ClangdServer::formatCode(llvm::StringRef Code, PathRef File,
   return IncludeReplaces.merge(format::reformat(
       Style.get(), *Changed,
       tooling::calculateRangesAfterReplacements(IncludeReplaces, Ranges),
       File));
 }
 
 void ClangdServer::findDocumentHighlights(
     PathRef File, Position Pos, Callback<std::vector<DocumentHighlight>> CB) {
-
-  auto FS = FSProvider.getFileSystem();
-  auto Action = [FS, Pos](Callback<std::vector<DocumentHighlight>> CB,
-                          llvm::Expected<InputsAndAST> InpAST) {
+  auto Action = [Pos](Callback<std::vector<DocumentHighlight>> CB,
     if (!InpAST)
       return CB(InpAST.takeError());
     CB(clangd::findDocumentHighlights(InpAST->AST, Pos));
   };
 
   WorkScheduler.runWithAST("Highlights", File, Bind(Action, std::move(CB)));
 }
 
 void ClangdServer::findHover(PathRef File, Position Pos,
                              Callback<llvm::Optional<Hover>> CB) {
-  auto FS = FSProvider.getFileSystem();
-  auto Action = [Pos, FS](Callback<llvm::Optional<Hover>> CB,
-                          llvm::Expected<InputsAndAST> InpAST) {
+  auto Action = [Pos](Callback<llvm::Optional<Hover>> CB,
     if (!InpAST)
       return CB(InpAST.takeError());
     CB(clangd::getHover(InpAST->AST, Pos));
   };
 
   WorkScheduler.runWithAST("Hover", File, Bind(Action, std::move(CB)));
 }