litemap: Remove unnecessary map calls. (#4261) #1263

Job	Run time
Check Credentials for jobs that need JSON credentials	2s
WASM Demo	9m 24s
bench-binsize	8m 37s
bench-perf (components/collections)	5m 23s
bench-perf (components/datetime)	5m 31s
bench-perf (components/locid)	5m 20s
bench-perf (components/locid_transform)	3m 54s
bench-perf (components/plurals)	7m 51s
bench-perf (components/segmenter)	5m 24s
bench-perf (experimental/transliterate)	2m 32s
bench-perf (experimental/zerotrie)	5m 38s
bench-perf (provider/blob)	3m 48s
bench-perf (utils/fixed_decimal)	5m 22s
bench-perf (utils/litemap)	3m 31s
bench-perf (utils/tinystr)	6m 17s
bench-perf (utils/writeable)	4m 13s
bench-perf (utils/zerovec)	8m 10s
bench-memory (macos-latest)	21m 46s
bench-memory (ubuntu-latest)	10m 45s
bench-memory (windows-latest)	11m 36s
bench-datasize	28m 39s
FFI Preview	2m 28s
Docs Preview	2m 54s
Deploy to GitHub Pages	6m 49s
	2h 55m 54s

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