Revert "i965: Extend compute-to-mrf pass to understand blocks of MOVs"
Revert "i965: Extend compute-to-mrf pass to understand blocks of MOVs"

This reverts commit bbefb15e01e1c16af69646898918982ae00f8c92.
Fixes the 11 regressions caused in framebuffer_blit tests in
Khronos GLES3 CTS tests:

Original patch reduced the instruction count but had no performance
benefits. So, it's safe to revert it without causing any performance
regressions.

Signed-off-by: Anuj Phogat <e2026475996c48f0b97fd37e84129b3912980428@gmail.com>
Acked-by: Kristian Høgsberg <ca9b5b1e27d4fa7f4ba6848bdd08ca52cfd6330c@bitplanet.net>
Reviewed-by: Jordan Justen <a79006884ba9cf5f4f7fcbb92a15b208780d8c97@intel.com>

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