media: tegra: nvavp: fix VDE is on after lp0 cycle

media: tegra: nvavp: fix VDE is on after lp0 cycle

VDE is unpowergated in nvavp suspend callback, which leads
to VDE power always on after first lp0 cycle.

Remove the unnecessary unpowergate statesment which is left
over by history to avoid wakeup issue.

Bug 1455975

Change-Id: I1f141cad60adffee048b43c3e73bee9b678d499d
Signed-off-by: Allen Yu <alleny@nvidia.com>
Reviewed-on: http://git-master/r/379525
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>