Revert "radeonsi: honor a user-specified pitch on gfx10.3"

Revert "radeonsi: honor a user-specified pitch on gfx10.3"

This reverts commit c4b5fd9ab096a0bb5106b93191b13c81cc32243b.

It breaks mipmapping. This is only meant to be used by OpenCL, which allows
setting a user pitch for linear images. In all other cases, don't support
a custom pitch.

Fixes: c4b5fd9ab096a0bb51 "radeonsi: honor a user-specified pitch on gfx10.3"
Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6137>