Revert "Add dump info for VarDecl"

This reverts commit 831a8b5.

Other test need to be updated too

Author: AaronBallman

clang/lib/AST/TextNodeDumper.cpp

@@ -2461,27 +2461,13 @@ void TextNodeDumper::VisitVarDecl(const VarDecl *D) {
       break;
     case VarDecl::ParenListInit:
       OS << " parenlistinit";
-      break;
     }
   }
   if (D->needsDestruction(D->getASTContext()))
     OS << " destroyed";
   if (D->isParameterPack())
     OS << " pack";
 
-  VarDecl::DefinitionKind K = D->isThisDeclarationADefinition();
-  switch (K) {
-  case VarDecl::DefinitionKind::DeclarationOnly:
-    OS << " declaration";
-    break;
-  case VarDecl::DefinitionKind::Definition:
-    OS << " definition";
-    break;
-  case VarDecl::DefinitionKind::TentativeDefinition:
-    OS << " tentative definition";
-    break;
-  }
-
   if (const auto *Instance = D->getTemplateInstantiationPattern()) {
     OS << " instantiated_from";
     dumpPointer(Instance);