msm: ipa3: do not configure IPA_SPARE_REG_1

Remove IPA_SPARE_REG_1 configuration from apps.
This register is configured by TZ.

Change-Id: Ic548271aa45d5ea208e2a993466fdb2382144d02
Acked-by: Ady Abraham <adya@qti.qualcomm.com>
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>