Removed unnecessary Math.round() call

Result of the operation is always an integer so the call to Math.round() 
is redundant.

Change-Id: I19fe01b0d71241012ad9f2b5f5c11fabf2b216f5
Signed-off-by: Eryk Szymanski <eryksz@gmail.com>

gerrit-gwtui/src/main/java/com/google/gerrit/client/changes/ChangeTable2.java

@@ -329,7 +329,7 @@ public class ChangeTable2 extends NavigationTable<ChangeInfo> {
     int changedLines = c.insertions() + c.deletions();
     int p = 100;
     if (changedLines < largeChangeSize) {
-      p = Math.round(changedLines * 100 / largeChangeSize);
+      p = changedLines * 100 / largeChangeSize;
     }
 
     int width = Math.max(2, 70 * p / 100);