Revert "build: restore `ng-dev` script" #2780

Job	Run time
list	21s
workflow (build-unit-tests)	2m 25s
workflow (devkit-core-tests-rerun)	1m 23s
workflow (modules-builder-tests)	2m 0s
workflow (devkit-core-tests)	1m 17s
workflow (build-cli)	1m 42s
	9m 8s

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