[AArch64] Delete obsolete CC_ZESWP and CC_SESWP CC modes

	* config/aarch64/aarch64-modes.def (CC_ZESWP, CC_SESWP): Delete.
	* config/aarch64/aarch64.c (aarch64_select_cc_mode): Remove condition
	that returns CC_SESWPmode and CC_ZESWPmode.
	(aarch64_get_condition_code_1): Remove handling of CC_SESWPmode
	and CC_SESWPmode.
	(aarch64_rtx_costs): Likewise.

From-SVN: r236809