msm8974: Remove the LOGK_LOGBUF flag from msm_rtb.filter

LOKG_LOGBUF events are rarely useful on 8974, since full kernel
logs can be recovered from ramdumps. Filter out these events
so they do not flood the RTB logs (as they do during kernel
panics).

Change-Id: I0b296b3f4219669abeedac5f1faa8fc4c90cfb9e
1 file changed