Remove a few axiom dependencies

[GinoGiotto]

This PR contains the following proof revisions:

• Edit hbsbw -> Drop ax-6, ax-7, ax-10, ax-12.

• Edit cbvmow -> Drop ax-10.

• Edit cbveuw -> Drop ax-10.

• Edit cbvabw -> Drop ax-10.

• Edit nfcrii -> Drop ax-10, ax-11.

• Edit nfcri -> Drop ax-10, ax-11.

• Edit cbvralfw -> Drop ax-10.

• Edit cbvrmow -> Drop ax-10.

All added DV conditions are with dummy variables, so the strength of the statements is not affected.

[wlammen]

I checked by the theorem lists that no extra axiom was introduced.