Remove the 'Change SHA1:' from the PatchScreen title

This extra info in the title is not useful so removing
it makes the PatchScreen less cluttered by default.

Change-Id: Ib760287410e718eb023005c13a456d875b9e5edc

gerrit-gwtui/src/main/java/com/google/gerrit/client/patches/PatchMessages.java

@@ -19,8 +19,6 @@ import com.google.gwt.i18n.client.Messages;
 import java.util.Date;
 
 public interface PatchMessages extends Messages {
-  String patchWindowTitle(String changeId, String file);
-  String patchPageTitle(String changeId, String path);
   String patchSkipRegion(@PluralCount int lineCnt);
   String draftSaved(Date when);
 }

gerrit-gwtui/src/main/java/com/google/gerrit/client/patches/PatchMessages.properties

@@ -1,6 +1,3 @@
-patchWindowTitle = Change {0}: {1}
-patchPageTitle = Change {0}: {1}
-
 patchSkipRegion = (... skipping {0} common lines ...)
 
 draftSaved = Draft saved at {0,time,short}

gerrit-gwtui/src/main/java/com/google/gerrit/client/patches/PatchScreen.java

@@ -395,8 +395,8 @@ public abstract class PatchScreen extends Screen implements
       fileName = fileName.substring(last + 1);
     }
 
-    setWindowTitle(PatchUtil.M.patchWindowTitle(cid.abbreviate(), fileName));
-    setPageTitle(PatchUtil.M.patchPageTitle(cid.abbreviate(), path));
+    setWindowTitle(fileName);
+    setPageTitle(path);
 
     if (idSideB.equals(patchSetDetail.getPatchSet().getId())) {
       commitMessageBlock.setVisible(true);