Revert "iris: Use the data cache for indirect UBO pulls"

This reverts commit 3b784370c376dbe642c2a8232169363d4fda0c02.

This fixes a 30% performance regression in Manhattan 3.1 on Icelake.

Fixes: 3b784370c376d "iris: Use the data cache for indirect UBO pulls"
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7173>
3 files changed