removed ink-bar from the compatibility check lists

[pyu10055]

similar to tab-body and tab-header, ink-bar is not used externally.

issue #3166

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We found a Contributor License Agreement for you (the sender of this pull request), but were unable to find agreements for the commit author(s). If you authored these, maybe you used a different email address in the git commits than was used to sign the CLA (login here to double check)? If these were authored by someone else, then they will need to sign a CLA as well, and confirm that they're okay with these being contributed to Google.

[andrewseguin]

This is correct and looks good to me, non-exported components do not need compatibility check and can cause problems if used within component templates under compatibility mode.

[andrewseguin]

Can you sign the CLA?

[andrewseguin]

Closed as duplicate of #3267

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