drm/amdgpu: Remove GC HW IP 9.3.0 from noretry=1

The following commit updated gmc->noretry from 0 to 1 for GC HW IP
9.3.0:

    commit 5f3854f1 ("drm/amdgpu: add more cases to noretry=1")

This causes the device to hang when a page fault occurs, until the
device is rebooted. Instead, revert back to gmc->noretry=0 so the device
is still responsive.

Fixes: 5f3854f1 ("drm/amdgpu: add more cases to noretry=1")
Signed-off-by: Tim Van Patten <timvp@google.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>