[Java] Added method to remove null_masks if the column has no nulls

[razajafri]

This PR adds a method to remove the validity vector in cases where there are columns in a Table with no nulls but still have a validity vector.

[codecov]

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[razajafri]

Thanks for the review guys, is there anything else that you want me to change?

[razajafri]

Rerun tests

[razajafri]

@revans2 I have addressed your concerns. I have removed deprecation as it doesn't hurt to keep this API it also makes more sense and is less confusing to users.

[razajafri]

Can I ask for one more review?

[razajafri]

rerun tests

[dillon-cullinan]

rerun tests

[razajafri]

@gpucibot merge