Clean up `JavaMinimizeDependencyJars` feature flag #6561

Job	Run time
Ruby analysis (macos-latest, nightly-latest)	1m 19s
Ruby analysis (ubuntu-latest, nightly-latest)	46s
Ruby analysis (ubuntu-latest, linked)	47s
Ruby analysis (macos-latest, default)	1m 46s
Ruby analysis (macos-latest, linked)	1m 27s
Ruby analysis (ubuntu-latest, default)	48s
	6m 53s

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