[arm] Remove FEATURES field from FPU descriptions

[arm] Remove FEATURES field from FPU descriptions

Now that everything uses the new ISA features, we can remove the
FEATURES field from the FPU descriptions, along with all the macros
and definitions associated with it.

	* arm-fpus.def (ARM_FPU): Remove features field from all definitions.
	* arm.h (arm_fpu_feature_set): Delete typedef.
	(FPU_FL_NONE): Delete.
	(FPU_FL_NEON): Delete.
	(FPU_FL_FP16): Delete.
	(FPU_FL_CRYPTO): Delete.
	(FPU_FL_DBL): Delete.
	(FPU_FL_D32): Delete.
	(FPU_FL_VFPv2): Delete.
	(FPU_FL_VFPv3): Delete.
	(FPU_FL_VFPv4): Delete.
	(FPU_FL_VFPv5): Delete.
	(FPU_FL_AMRv8): Delete.
	(FPU_VFPv2): Delete.
	(FPU_VFPv3): Delete.
	(FPU_VFPv4): Delete.
	(FPU_VFPv5): Delete.
	(FPU_ARMv8): Delete.
	(FPU_DBL): Delete.
	(FPU_D32): Delete.
	(FPU_NEON): Delete.
	(FPU_CRYPTO): Delete.
	(FPU_FP16): Delete.
	(arm_fpu_desc): Delete features field.
	* arm.c (all_fpus): Don't initialize feature field.

From-SVN: r243715