msm: adsprpc: remove debug message while getting device info

Remove printing of error message when getting device info fails,
to avoid flooding of kernel logs

Change-Id: If160c581159dff7c689207d5e62b885eef67e35d
Acked-by: Amol Mahesh <amahesh@qti.qualcomm.com>
Signed-off-by: Tharun Kumar Merugu <mtharu@codeaurora.org>