[FSSDK-12879] Remove Karma testing infrastructure (#1162) #1610

Job	Run time
commonjs_test	1m 43s
typescript_test	1m 36s
lint	1m 1s
unit_tests (18)	1m 26s
unit_tests (22)	1m 26s
unit_tests (24)	1m 26s
integration_tests / test	5s
unit_tests (20)	1m 35s
browser_tests (edge)	6m 34s
browser_tests (chrome)	5m 52s
browser_tests (firefox)	6m 10s
browser_tests (safari)	3m 54s
lint_markdown_files / lint	59s
fullstack_production_suite / test	5s
Coveralls coverage	4s
	33m 56s

Provide feedback