ARM: dts: msm: Remove some unused interrupts for PM855B charger

The following interrupts in PM855B charger are initially added for
validating hardware and are no longer needed: BSM_ACTIVE,
ALL_CHNL_CONV_DON, FG_FVCAL_QUALIFIED and IMP_TRIGGER.

Disable them by removing from the device tree.

Change-Id: Ie810017703b08e04bb1d93c6653552547df207e4
Signed-off-by: Harry Yang <harryy@codeaurora.org>