refactor(@angular/cli): remove modernize tool and add instructions fo… #3015

Job	Run time
build-e2e-windows	27s
build	29s
lint	2m 9s
e2e-windows	-1s
publish-snapshots	0s
test	0s
e2e-snapshots	0s
Browser Compatibility Tests	0s
e2e	-1s
e2e-package-managers	-1s
	3m 2s

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