diff --git a/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/impl/synthetic/LightParameterList.java b/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/impl/synthetic/LightParameterList.java
deleted file mode 100644
index 4c10b3bde679..000000000000
--- a/plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/impl/synthetic/LightParameterList.java
+++ /dev/null
@@ -1,70 +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 org.jetbrains.plugins.groovy.lang.psi.impl.synthetic;
-
-import com.intellij.openapi.diagnostic.Logger;
-import com.intellij.openapi.util.Computable;
-import com.intellij.psi.*;
-import com.intellij.psi.impl.PsiImplUtil;
-import com.intellij.psi.impl.light.LightElement;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.plugins.groovy.GroovyFileType;
-
-/**
- * todo us LightParameterListBuilder
- * @author ven
- */
-public class LightParameterList extends LightElement implements PsiParameterList {
-  private static final Logger LOG = Logger.getInstance("#org.jetbrains.plugins.groovy.lang.psi.impl.synthetic.LightParameterList");
-
-  private final Computable<GrLightParameter[]> myParametersComputation;
-  private GrLightParameter[] myParameters = null;
-  private final Object myParametersLock = new String("LightParametersListLock");
-
-  protected LightParameterList(PsiManager manager, Computable<GrLightParameter[]> parametersComputation) {
-    super(manager, GroovyFileType.GROOVY_LANGUAGE);
-    myParametersComputation = parametersComputation;
-  }
-
-  public void accept(@NotNull PsiElementVisitor visitor) {
-    if (visitor instanceof JavaElementVisitor) {
-      ((JavaElementVisitor) visitor).visitParameterList(this);
-    }
-  }
-
-  @NotNull
-  public PsiParameter[] getParameters() {
-    synchronized (myParametersLock) {
-      if (myParameters == null) {
-        myParameters = myParametersComputation.compute();
-      }
-      return myParameters;
-    }
-  }
-
-  public int getParameterIndex(PsiParameter parameter) {
-    LOG.assertTrue(parameter.getParent() == this);
-    return PsiImplUtil.getParameterIndex(parameter, this);
-  }
-
-  public int getParametersCount() {
-    return getParameters().length;
-  }
-
-  public String toString() {
-    return "Light Parameter List";
-  }
-}