[Fixed] "Build self" command

[tomreyn]

I was trying to find out about the purpose of the "build self" command, which, in the Shibboleth techtree, in the Alpha faction, both farm and defense tower provide.

After discussing with hailstone for a while, it seems that the "build self" command is only supposed to be used internally by the time a building is first built, but it is never supposed to be manually triggered by a human player. If this is the case then this means that the "build self" command icon should never display for farm, defense tower or any other building.

[silnarm]

Yeah, I think I added a not functional flag to not display the command, but thinking about it recently, I believe the build-self command may be unnecessary anyway, if the morph is successful then we just set the 'build-self' skill (like setting 'be-built' with a building, and away you go...)

So, I think we can go one better than not showing it, and completely remove it