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ARROW-8478: [Java] Revert "ARROW-7534

This reverts commit 5a94b5d6f6c170a02ac1da2dcf98c5dbc8ea1ccb.

I don't think this will unblock the release candidate but we should wait until the release is cut.

Closes #6955 from emkornfield/revert_contrib

Authored-by: Micah Kornfield <emkornfield@gmail.com>
Signed-off-by: Micah Kornfield <emkornfield@gmail.com>