DiffTable: remove unused import

Change-Id: Ia67b812bee54e25b4af46aca0b1fb0a113d7ba35
diff --git a/gerrit-gwtui/src/main/java/com/google/gerrit/client/diff/DiffTable.java b/gerrit-gwtui/src/main/java/com/google/gerrit/client/diff/DiffTable.java
index ce0ea63..aad2692 100644
--- a/gerrit-gwtui/src/main/java/com/google/gerrit/client/diff/DiffTable.java
+++ b/gerrit-gwtui/src/main/java/com/google/gerrit/client/diff/DiffTable.java
@@ -14,7 +14,6 @@
 
 package com.google.gerrit.client.diff;
 
-import com.google.gerrit.client.Gerrit;
 import com.google.gerrit.client.changes.ChangeInfo.RevisionInfo;
 import com.google.gerrit.reviewdb.client.PatchSet;
 import com.google.gwt.core.client.GWT;