[SysApps][Android]Fix Issue: Error callback isn't triggered without SIM card.

When there is no SIM card, the onSmsSend put a error message and return. Thus,
the JS error callback won't be invoked. Simply removing the return will
resolve the issue, the error will be handled in MessagingReceiver and
send back to JS end.

BUG=XWALK-940
Merge pull request #1686 from shawngao5/XWALK-940-1

[SysApps][Android] Fix Issue: Error callback isn't triggered without SIM card.