TelephonyProvider: Improve the performance of deleting Mms.
Triggers "update_threads_on_delete_part" and "mms_words_delete"
run too many times, when delete attachment rows from part
table, it caused Mms application can't deleting lots of MMS
in an acceptable time.
1. Drop the triggers "update_threads_on_insert_part" and
2. Add code instead of trigger's job to avoid unnecessary
operation, when delete a lot of mms.
CRs-Fixed: 786459, 1016740
2 files changed