Remove dead cc0 code from H8 port

Remove dead cc0 code from H8 port

gcc/
	* config/h8300/bitfield.md: Remove "cc" attribute on any
	insns where it remained.
	* config/h8300/combiner.md: Likewise.
	* config/h8300/jumpcall.md: Likewise.
	* config/h8300/logical.md: Likewise.
	* config/h8300/testcompare.md: Likewise.
	* config/h8300/h8300.md (old_cc attr): Renamed from cc attr.
	* config/h8300/h8300.c (notice_update_cc): Remove.
	(compute_plussi_cc): Change references to CC_* to OLD_CC_.
	(compute_logical_op_cc): Likewise.
	(shift_one, shift_two): Likewise.
	(compute_a_shift_cc): Likewise.
	(get_shift_alg): Likewise.
	(struct shift_insn): Change type of cc_valid field.
	(struct shift_info): Likewise.
	* config/h8300/save.md: Remove accidentially created file.