i965/vec4/nir: remove emit_untyped_surface_read and emit_untyped_atomic at brw_vec4_visitor

surface_access emit_untyped_read and emit_untyped_atomic provides the same
functionality.

v2: surface parameter of emit_untyped_atomic is a const, no need to
    specify default predicate on emit_untyped_atomic, use retype
    (Francisco Jerez).

Reviewed-by: Francisco Jerez <currojerez@riseup.net>
3 files changed