Revert "Improve int literal printing for template args. To be upstreamed."

Revert: root-project/llvm-project@ef296c01b432

Author: devajithvs

interpreter/llvm-project/clang/lib/AST/TemplateBase.cpp

@@ -133,14 +133,8 @@ static void printIntegral(const TemplateArgument &TemplArg, raw_ostream &Out,
     } else
       Out << "(" << T->getCanonicalTypeInternal().getAsString(Policy) << ")"
           << Val;
-  } else {
+  } else
     Out << Val;
-    // Handle cases where the value is too large to fit into the underlying type
-    // i.e. where the unsignedness matters.
-    if (T->isBuiltinType())
-      if (Val.isUnsigned() && Val.getBitWidth() == 64 && Val.countLeadingOnes())
-        Out << "ull";
-  }
 }
 
 static unsigned getArrayDepth(QualType type) {