Revert "drm/amd/display: Reset cached PSR parameters after hibernate"

This reverts commit d2069326.

Commit d2069326 ("drm/amd/display: Reset cached PSR parameters after hibernate")
causes a system hang when game resolution is changed. Revert it.

Reviewed-by: Jayendran Ramani <Jayendran.Ramani@amd.com>
Reviewed-by: Harry Vanzylldejong <Harry.Vanzylldejong@amd.com>
Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Evgenii Krasnikov <Evgenii.Krasnikov@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>