[FSSDK-12868] remove localHoldout feature toggle (#1166) #1621

Job	Run time
lint	53s
typescript_test	1m 29s
unit_tests (20)	1m 40s
commonjs_test	1m 32s
unit_tests (18)	1m 35s
browser_tests (chrome)	7m 25s
browser_tests (firefox)	7m 59s
unit_tests (24)	1m 20s
browser_tests (safari)	5m 27s
lint_markdown_files / lint	1m 6s
integration_tests / test	6s
browser_tests (edge)	6m 33s
unit_tests (22)	1m 17s
fullstack_production_suite / test	6s
Coveralls coverage	3s
	38m 31s

Provide feedback