title: iPhone project has "My Mac 64-bit"
body: <p>I'm working on an iPhone project and somehow the schema has "My Mac 64-bit" and "My Mac 32-bit" in addition to the normal "Simulator 4.3" and "IOS Device". </p>
  
  <p>Is there anyway to remove the "My Mac..." options? It always wants to switch to these when I switch git branches and I end up building without realizing it and get an error. More of an annoyance than anything.</p>