build: remove rootDir from root configuration #3530

Job	Run time
list	26s
workflow (devkit-core-tests-rerun)	1m 23s
workflow (build-unit-tests)	2m 15s
workflow (build-cli)	1m 35s
workflow (modules-builder-tests)	1m 58s
workflow (devkit-core-tests)	1m 27s
	9m 4s

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