[AArch64] Remove unused types and variable claimed to handle abi types.

gcc/

	* config/aarch64/aarch64.h (enum arm_abi_type): Remove.
	(ARM_ABI_AAPCS64): Ditto.
	(arm_abi): Ditto.
	(ARM_DEFAULT_ABI): Ditto.

From-SVN: r200637

gcc/ChangeLog

+2013-07-03  Yufeng Zhang  <yufeng.zhang@arm.com>
+
+	* config/aarch64/aarch64.h (enum arm_abi_type): Remove.
+	(ARM_ABI_AAPCS64): Ditto.
+	(arm_abi): Ditto.
+	(ARM_DEFAULT_ABI): Ditto.
+
 2013-07-03  James Greenhalgh  <james.greenhalgh@arm.com>
 
 	* config/aarch64/aarch64-builtins.c

gcc/config/aarch64/aarch64.h

@@ -521,12 +521,6 @@ typedef struct GTY (()) machine_function
 #endif
 
 
-/* Which ABI to use.  */
-enum arm_abi_type
-{
-  ARM_ABI_AAPCS64
-};
-
 enum arm_pcs
 {
   ARM_PCS_AAPCS64,		/* Base standard AAPCS for 64 bit.  */
@@ -534,11 +528,7 @@ enum arm_pcs
 };
 
 
-extern enum arm_abi_type arm_abi;
 extern enum arm_pcs arm_pcs_variant;
-#ifndef ARM_DEFAULT_ABI
-#define ARM_DEFAULT_ABI ARM_ABI_AAPCS64
-#endif
 
 #ifndef ARM_DEFAULT_PCS
 #define ARM_DEFAULT_PCS ARM_PCS_AAPCS64