aarch64: Remove testing of saturation cumulative QC bit

aarch64: Remove testing of saturation cumulative QC bit

Since we don't guarantee the ordering of the QC flag in FPSR in the
saturation intrinsics, we shouldn't be testing for it.
I want to relax the flags for some of the builtins to enable more
optimisation but that triggers the QC flag tests in
advsimd-intrinsics.exp.
We don't implement the saturation flag access intrinsics in aarch64
anyway and we don't want to.

gcc/testsuite/ChangeLog:

	* gcc.target/aarch64/advsimd-intrinsics/arm-neon-ref.h
	(CHECK_CUMULATIVE_SAT): Delete.
	(CHECK_CUMULATIVE_SAT_NAMED): Likewise.  Deleted related
	variables.
	* gcc.target/aarch64/advsimd-intrinsics/binary_sat_op.inc:
	Remove uses of the above.
	* gcc.target/aarch64/advsimd-intrinsics/unary_sat_op.inc:
	Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqabs.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqadd.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqdmlXl.inc: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqdmlXl_lane.inc:
	Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqdmlXl_n.inc: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqdmlal.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqdmlal_lane.c:
	Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqdmlal_n.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqdmlsl.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqdmlsl_lane.c:
	Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqdmlsl_n.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqdmulh.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqdmulh_lane.c:
	Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqdmulh_n.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqdmull.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqdmull_lane.c:
	Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqdmull_n.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqmovn.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqmovun.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqneg.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqrdmlXh.inc: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqrdmlXh_lane.inc:
	Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqrdmlah.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqrdmlah_lane.c:
	Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqrdmlsh.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqrdmlsh_lane.c:
	Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqrdmulh.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqrdmulh_lane.c:
	Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqrdmulh_n.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqrshl.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqrshrn_n.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqrshrun_n.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqshl.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqshl_n.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqshlu_n.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqshrn_n.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqshrun_n.c: Likewise.
	* gcc.target/aarch64/advsimd-intrinsics/vqsub.c: Likewise.