Eliminate redundant statement about AMO's stored value availability

[en-sc]

It is covered by

Whether data store triggers match on AMOs is UNSPECIFIED.

[rtwfroody]

This is more concise and just as clear.

[pdonahue-ventana]

This looks good. There's no normative change but it's clearer and the formatting is more consistent (rather than having some things in bullets and some not in bullets).

[rtwfroody]

Now that we're frozen, we are still allowed to make "minimal, non-substantive" changes (https://docs.google.com/document/d/1Au3veNdNJQKPq-oiQRKTzdgmM72FDaqZOKeH7sOnG04/edit#heading=h.fjjoh42d729w). This qualifies.