remove unused ParseResultVisitor

GitOrigin-RevId: 4edfe01115130eacf2527eb8f9c7a41c1205683f

platform/lang-impl/src/com/intellij/lang/pratt/ParseResultVisitor.java

@@ -1,27 +0,0 @@
-/*
- * Copyright 2000-2009 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.intellij.lang.pratt;
-
-import com.intellij.psi.tree.IElementType;
-import org.jetbrains.annotations.ApiStatus;
-import org.jetbrains.annotations.NotNull;
-
-@ApiStatus.Internal
-public interface ParseResultVisitor<T> {
-  T append();
-  T error();
-  T done(@NotNull IElementType type);
-}