Revert "cnss2: Assert if MHI resume fails"

This reverts commit c265a8fa.
Assert will be handled by a different API.

Change-Id: I2e6cb641669539ec505993ac7fe69e2a652f2f6f
CRs-Fixed: 2741967
Signed-off-by: Mahesh Kumar Kalikot Veetil <mkalikot@codeaurora.org>