ReceiveCommits: Remove unused member variable

Change-Id: I956d0742f971b32478673995d60a5e1cf0ca8695
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/git/ReceiveCommits.java b/gerrit-server/src/main/java/com/google/gerrit/server/git/ReceiveCommits.java
index d319375..4e5dd2b 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/git/ReceiveCommits.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/git/ReceiveCommits.java
@@ -253,7 +253,6 @@
   private final PersonIdent gerritIdent;
   private final TrackingFooters trackingFooters;
   private final TagCache tagCache;
-  private final ChangeCache changeCache;
   private final WorkQueue workQueue;
   private final ListeningExecutorService changeUpdateExector;
   private final RequestScopePropagator requestScopePropagator;
@@ -333,7 +332,6 @@
     this.gerritIdent = gerritIdent;
     this.trackingFooters = trackingFooters;
     this.tagCache = tagCache;
-    this.changeCache = changeCache;
     this.workQueue = workQueue;
     this.changeUpdateExector = changeUpdateExector;
     this.requestScopePropagator = requestScopePropagator;