Revert of Implemented parseSingleValue in CSSPropertyAPICounterIncrement.

third_party/WebKit/Source/core/css/properties/CSSPropertyAPICounterIncrement.cpp

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/css/properties/CSSPropertyAPICounterIncrement.h"
 
-#include "core/css/properties/CSSPropertyCounterUtils.h"
-
-namespace blink {
-
-const CSSValue* CSSPropertyAPICounterIncrement::parseSingleValue(
-    CSSParserTokenRange& range,
-    const CSSParserContext*) {
-  return CSSPropertyCounterUtils::consumeCounter(
-      range, CSSPropertyCounterUtils::kIncrementDefaultValue);
-}
-
-}  // namespace blink
+namespace blink {}  // namespace blink