[clangd] Prune some dead declarations. No functionality change.

llvm-svn: 330599

clang-tools-extra/clangd/Diagnostics.h

@@ -85,16 +85,11 @@ public:
                         const clang::Diagnostic &Info) override;
 
 private:
-  bool shouldIgnore(DiagnosticsEngine::Level DiagLevel,
-                    const clang::Diagnostic &Info);
-
   void flushLastDiag();
 
   std::vector<Diag> Output;
   llvm::Optional<LangOptions> LangOpts;
   llvm::Optional<Diag> LastDiag;
-  /// Is any diag or note from LastDiag in the main file?
-  bool LastDiagMentionsMainFile = false;
 };
 
 } // namespace clangd

clang-tools-extra/clangd/Trace.h

@@ -93,10 +93,6 @@ private:
   WithContext RestoreCtx;
 };
 
-/// Returns mutable span metadata if this span is interested.
-/// Prefer to use SPAN_ATTACH rather than accessing this directly.
-json::obj *spanArgs();
-
 /// Attach a key-value pair to a Span event.
 /// This is not threadsafe when used with the same Span.
 #define SPAN_ATTACH(S, Name, Expr)                                             \