aarch64: Remove ZIDR_EL1

ZIDR_EL1 was part of an early version of SVE, but didn't make
it to the final release.

opcodes/
	* aarch64-opc.c (aarch64_sys_regs): Remove zidr_el1 entry.

gas/
	* testsuite/gas/aarch64/sve-sysreg.s: Remove zidr_el1.
	* testsuite/gas/aarch64/sve-sysreg.d: Update accordingly.
	* testsuite/gas/aarch64/sve-sysreg-invalid.l: Likewise.
4 files changed