Remove unneeded RpcAuditEvent

RpcAuditEvent was only used by the RPC code that no longer exists
after the removal of the GWT UI.

Change-Id: I8533fe33f20bfef7a28aa0b5ea67eb48b91fa573
diff --git a/java/com/google/gerrit/server/audit/RpcAuditEvent.java b/java/com/google/gerrit/server/audit/RpcAuditEvent.java
deleted file mode 100644
index 6c53bb2..0000000
--- a/java/com/google/gerrit/server/audit/RpcAuditEvent.java
+++ /dev/null
@@ -1,47 +0,0 @@
-// Copyright (C) 2013 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.server.audit;
-
-import com.google.common.collect.ListMultimap;
-import com.google.gerrit.server.CurrentUser;
-
-public class RpcAuditEvent extends HttpAuditEvent {
-
-  /**
-   * Creates a new audit event with results
-   *
-   * @param sessionId session id the event belongs to
-   * @param who principal that has generated the event
-   * @param what object of the event
-   * @param when time-stamp of when the event started
-   * @param params parameters of the event
-   * @param httpMethod HTTP method
-   * @param input input
-   * @param status HTTP status
-   * @param result result of the event
-   */
-  public RpcAuditEvent(
-      String sessionId,
-      CurrentUser who,
-      String what,
-      long when,
-      ListMultimap<String, ?> params,
-      String httpMethod,
-      Object input,
-      int status,
-      Object result) {
-    super(sessionId, who, what, when, params, httpMethod, input, status, result);
-  }
-}