Remove use of `mp_units` from `//filter` #76

Job	Run time
buildifier	12s
build (--config=clang-format)	3m 58s
build (--config=clang-tidy)	5m 58s
build (--compilation_mode=opt)	5m 18s
test (gcc12)	5m 28s
test (gcc12, asan)	4m 20s
test (gcc12, tsan)	4m 44s
test (gcc12, ubsan)	4m 54s
test (clang16)	5m 10s
test (clang16, asan)	4m 43s
test (clang16, tsan)	4m 22s
test (clang16, ubsan)	4m 36s
build-without-terminfo (gcc12)	4m 16s
build-without-terminfo (clang16)	5m 3s
	1h 3m 2s

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