msm: adsprpc: remove redundant check for static PDR handle

Remove the redundant check for static PDR handle as the PD up flag
serves the same purpose.

Change-Id: I6c9d925fec745bf84bd26468bf39c8e6e78b858d
Acked-by: Thyagarajan Venkatanarayanan <venkatan@qti.qualcomm.com>
Signed-off-by: Himateja Reddy <hmreddy@codeaurora.org>