Remove unused CorruptEntityException

CorruptEntityException is never thrown. Remove it and the few places where
its caught.

Change-Id: I19a3c219aea01092f4d128f1b938a019bea9f314

gerrit-common/src/main/java/com/google/gerrit/common/errors/CorruptEntityException.java

@@ -1,28 +0,0 @@
-// Copyright (C) 2008 The Android Open Source Project
-//
-// 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.google.gerrit.common.errors;
-
-import com.google.gwtorm.client.Key;
-
-/** Error indicating the entity's database records are invalid. */
-public class CorruptEntityException extends Exception {
-  private static final long serialVersionUID = 1L;
-
-  public static final String MESSAGE_PREFIX = "Corrupt Database Entity: ";
-
-  public CorruptEntityException(final Key<?> key) {
-    super(MESSAGE_PREFIX + key);
-  }
-}