Revert "ac/shader: gather If TES reads TESSINNER or TESSOUTER"

Revert "ac/shader: gather If TES reads TESSINNER or TESSOUTER"

This can't work for two reasons:
- TESSINNER/TESSOUTER are shader input values, so never translated
to the intrinsic ops
- the shader info pass scans the current stage but we want to know
in TCS, if TES reads the tess factors.

This fixes 6 regressions related to
deqp-vk/tessellation/shader_input_output/tess_level_{inner,outer}_XXX_tes

This reverts commit 5ba1a61648e2dea96f621a5886ad8b937a471ab4.