Revert "defconfig: msm: Enable RCU_STALL_WATCHDOG_BITE flag"

This reverts commit de6e9341 ("defconfig: msm: Enable
RCU_STALL_WATCHDOG_BITE flag") to disable watchdog bites
during RCU stalls because RCU stalls may recover and killing
the system for very first RCU stall warning is an overkill.

Change-Id: I10b9d7858071f586fd3d1e925f18f7386890105a
Signed-off-by: Imran Khan <kimran@codeaurora.org>