Skip already removed maintainer
Skip already removed maintainer

If maintainer was >1 times a release manager during the last
5 (= number-of-maintainers - 1) releases don't try to remove
them twice

Undin/intellij-rust,Undin/intellij-rust,intellij-rust/intellij-rust,Undin/intellij-rust,Undin/intellij-rust,intellij-rust/intellij-rust,intellij-rust/intellij-rust,Undin/intellij-rust,intellij-rust/intellij-rust,intellij-rust/intellij-rust,Undin/intellij-rust,intellij-rust/intellij-rust