Remove another warning flag from a message #24

Job	Run time
ormolu	10s
build ucm (ubuntu-20.04)	4m 8s
build ucm (macOS-12)	9m 35s
build ucm (windows-2019)	11m 51s
run interpreter tests (ubuntu-20.04)	1m 8s
generate jit source	7s
run transcripts (ubuntu-20.04)	4m 20s
run interpreter tests (macOS-12)	1m 56s
run transcripts (macOS-12)	6m 22s
run transcripts (windows-2019)	7m 17s
build jit binary / build jit binary (ubuntu-20.04)	9s
build jit binary / build jit binary (macOS-12)	19s
build jit binary / build jit binary (windows-2019)	17s
test jit / test jit (ubuntu-20.04)	7s
test jit / test jit (macOS-12)	19s
	48m 5s

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