msm: ipa: Remove unwanted gsi debug register reads

This changes removes the unwanted gsi dedug register reads, to which
IPA driver dont have access to.

Change-Id: I6efb1045275a9bdb238e6184ec676013ab1678bc
Acked-by: Jyothi Jayanthi <jyothij@qti.qualcomm.com>
Signed-off-by: Michael Adisumarta <madisuma@codeaurora.org>