Remove debug log from MailboxFinder.

It was temporarily added purely for debugging, and forgot to remove.

Change-Id: I7424465e12faf7f3344206ad9baac075a0b18b26

src/com/android/email/activity/MailboxFinder.java

@@ -174,7 +174,6 @@ public class MailboxFinder {
 
         @Override
         protected void onPostExecute(Long mailboxId) {
-            Log.w(Email.LOG_TAG, "" + isCancelled() + " " + mResult);
             if (isCancelled()) {
                 return;
             }