Revert "LatinIme: uses INTERNET permission to update dictionaries"

LatinIME also uses to flail on dictionaries it already has downloaded and eat battery. SCROO IT

This reverts commit 00420cfae78e89a08bf3fb78d09d2152ddaa8808.

Change-Id: Ia03e6cab5b8b260de93fe54625d720dc10c7dfb6