Remove unused import

Change-Id: Ib27adfa6f631e793045bc3e579eca33686321c8f
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>
diff --git a/src/main/java/com/googlesource/gerrit/plugins/branchnetwork/canvas/GitGraphServlet.java b/src/main/java/com/googlesource/gerrit/plugins/branchnetwork/canvas/GitGraphServlet.java
index ba56d8a..2be0a18 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/branchnetwork/canvas/GitGraphServlet.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/branchnetwork/canvas/GitGraphServlet.java
@@ -16,7 +16,6 @@
 import java.io.IOException;
 import java.io.PrintWriter;
 import java.net.MalformedURLException;
-import java.net.URL;
 
 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServlet;