Remove page_cache dependency from profile. #577

Job	Run time
set_sites	44s
test_phpunit	1m 32s
lint_theme	41s
test_new_site	12m 11s
test_existing_site (amstudies)	6m 13s
test_existing_site (artexhibitions)	5m 34s
test_existing_site (cesta)	5m 56s
test_existing_site (feldman)	4m 36s
test_existing_site (grandtour)	4m 43s
test_existing_site (hopkinsmarinestation)	7m 18s
test_existing_site (race)	4m 34s
test_existing_site (shenlab)	5m 23s
test_existing_site (sitp)	7m 10s
test_existing_site (siw)	5m 0s
deploy_branch	1m 48s
	1h 13m 23s

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