Remove SourceClear scan workflow due to security vulnerability (#1139) #1539

Job	Run time
browser_tests (safari)	8m 13s
unit_tests (18)	1m 44s
unit_tests (24)	1m 30s
integration_tests / test	7s
lint	1m 3s
unit_tests (22)	1m 41s
browser_tests (edge)	11m 33s
unit_tests (20)	1m 39s
typescript_test	1m 41s
lint_markdown_files / lint	1m 3s
browser_tests (firefox)	7m 57s
fullstack_production_suite / test	6s
browser_tests (chrome)	7m 27s
Coveralls coverage	3s
	45m 47s

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