ci: Don't set `compiler-builtins-no-f16-f128` #1148

Job	Run time
build (libgccjit12.so, gcc12, --no-default-features, TEST_FLAGS='-Cpanic=abort -Zpanic-abort-test...	1m 27s
build (libgccjit.so, master)	2m 16s
build (libgccjit_without_int128.so, master-without-128bit-integers)	2m 54s
success_failures	2s
	6m 39s

Provide feedback