[Gardening] Remove An Unused TLCD Checking Entrypoint

Author: CodaFi

include/swift/Sema/IDETypeChecking.h

@@ -136,11 +136,6 @@ namespace swift {
   /// Type check a function body element which is at \p TagetLoc .
   bool typeCheckASTNodeAtLoc(DeclContext *DC, SourceLoc TargetLoc);
 
-  /// Typecheck top-level code parsed during code completion.
-  ///
-  /// \returns true on success, false on error.
-  bool typeCheckTopLevelCodeDecl(TopLevelCodeDecl *TLCD);
-
   LookupResult
   lookupSemanticMember(DeclContext *DC, Type ty, DeclName name);
 

lib/Sema/TypeChecker.cpp

@@ -460,13 +460,6 @@ bool swift::typeCheckASTNodeAtLoc(DeclContext *DC, SourceLoc TargetLoc) {
                             true);
 }
 
-bool swift::typeCheckTopLevelCodeDecl(TopLevelCodeDecl *TLCD) {
-  auto &Ctx = static_cast<Decl *>(TLCD)->getASTContext();
-  DiagnosticSuppression suppression(Ctx.Diags);
-  TypeChecker::typeCheckTopLevelCodeDecl(TLCD);
-  return true;
-}
-
 void TypeChecker::checkForForbiddenPrefix(ASTContext &C, DeclBaseName Name) {
   if (C.TypeCheckerOpts.DebugForbidTypecheckPrefix.empty())
     return;