As others have pointed out, just because it's in the Action Bar does not make it a "combat action." Food, medicines, emotes, mounts, teleport, etc. All are able to be equipped. As for depriving you of precious slots, notice that the bar has 2 extra slots from what we had in 1.0. That's 6 extra slots (assuming that makes it through to release, or is all the extra slots we are given).

This is simple not a serious issue.