prog: Delete all remains of OPCODE_SNE, OPCODE_SEQ, OPCODE_SGT, and OPCODE_SLE

There is nothing left that can generate them.  These used to be
generated by ir_to_mesa or by the assembler for various NV extensions
that have been removed.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
8 files changed