refactor(@angular/ssr): remove deprecated `provideServerRoutesConfig`… #642

Job	Run time
list	38s
workflow (build-cli)	2m 4s
workflow (modules-builder-tests)	2m 31s
workflow (devkit-core-tests)	1m 58s
workflow (devkit-core-tests-rerun)	1m 52s
workflow (build-unit-tests)	3m 1s
	12m 4s

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