Revert load instructions with reserved bits[14:12] = 111 #667

Job	Run time
rvgo-lint	2m 27s
check-optimism-version-match	30s
rvgo-abigen	57s
op-program-test	2m 7s
rvgo-tests	11m 44s
rvsol-lint	7s
rvsol-tests	1m 39s
	19m 31s

Provide feedback