Bug 891904 - Un-schedule full spell check when checker is disabled; r=ehsan,a=Standard8 for checkin on Thunderbird specific branch. DONTBUILD

--HG--
branch : GECKO250b1_2013101508_RELBRANCH
extra : transplant_source : %1E%1Bk-%3C%F4X%97%27%F1%E5t%DCR%C8%D8B%13%E1U