[arm] Delete unused arm_fp_model

The arm_fp_model enumeration type has only had one useful value since
the FPA support was removed, and it's no-longer used anywhere.  This
patch just cleans that up by removing it.

	* arm.h (arm_fp_model): Delete.

From-SVN: r243706

gcc/ChangeLog

 2016-12-15  Richard Earnshaw  <rearnsha@arm.com>
 
+	* arm.h (arm_fp_model): Delete.
+
+2016-12-15  Richard Earnshaw  <rearnsha@arm.com>
+
 	* arm-cores.def: Remove FLAGS field from all core definitions.
 	* arm-arches.def: Likewise.
 	* arm-opts.h (enum processor_type): Remove FLAGS parameter from

gcc/config/arm/arm.h

@@ -340,14 +340,6 @@ typedef unsigned long arm_fpu_feature_set;
 #define FPU_FL_FP16	(1 << 1)	/* Half-precision.  */
 #define FPU_FL_CRYPTO	(1 << 2)	/* Crypto extensions.  */
 
-/* Which floating point model to use.  */
-enum arm_fp_model
-{
-  ARM_FP_MODEL_UNKNOWN,
-  /* VFP floating point model.  */
-  ARM_FP_MODEL_VFP
-};
-
 enum vfp_reg_type
 {
   VFP_NONE = 0,