ci: Don't set `compiler-builtins-no-f16-f128` #1628

Job	Run time
build (--std-tests)	2m 8s
build (--test-libcore)	48s
build (--test-successful-rustc --nb-parts 2 --current-part 1)	1m 37s
build (--test-successful-rustc --nb-parts 2 --current-part 0)	50s
build (--mini-tests)	1m 11s
success_gcc12	4s
	6m 38s

Provide feedback