chore: remove removeUnusedImports() rule #2996

Job	Run time
Error Prone (JDK 17)	5m 52s
Matrix Preparation	8s
21, corretto, same hashcode, windows, Pacific/Chatham, tr_TR, stress JIT	5m 21s
17, temurin, same hashcode, macos, America/New_York, fr_FR, stress JIT	7m 2s
21, oracle, windows, Pacific/Chatham, tr_TR	6m 0s
21, oracle, windows, Pacific/Chatham, de_DE, stress JIT	5m 41s
	30m 4s

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