i386: Remove mode size check in ix86_get_ssemov

i386: Remove mode size check in ix86_get_ssemov

Even though ix86_hard_regno_mode_ok doesn't allow xmm16-xmm31 nor
ymm16-ymm31 in 128/256 bit modes when AVX512VL is disabled, LRA can
still generate reg to reg moves with xmm16-xmm31 and ymm16-ymm31 in
128/256 bit modes.  Remove mode size check in ix86_get_ssemov.

gcc/

	PR target/94561
	* config/i386/i386.c (ix86_get_ssemov): Remove mode size check.

gcc/testsuite/

	PR target/94561
	* gcc.target/i386/pr94561.c: New test.