Revert "Also install .wasm.map files" #705

Job	Run time
docker-master	1h 24m 30s
publish-standalone-dry-run	18s
test-standalone (master, dev, default)	1m 24s
validate-docker-master	2m 55s
build-js-of-ocaml (master, 4.11.1)	12m 53s
build-wasm-of-ocaml (master, 4.14.1)	3m 53s
standalone-haskell (master)	45m 23s
generated-files (master)	23m 40s
test-amd64	2h 18m 47s
deploy-js-wasm-of-ocaml	0s
docker-check-all	6s
	5h 13m 49s

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