Delete .idea/.gitignore #1375

Job	Run time
Set CI/CD metadata	5s
Commit stage / Check file format	8s
Commit stage / Check English usage	8s
Commit stage / Count lines of code	7s
Commit stage / Check Markdown format	3s
Commit stage / Scan secrets	8s
Commit stage / Scan dependencies	31s
Test stage / Run Util Tests	33s
	1m 43s

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