[WatchKit] Cleanup rake tasks.
[WatchKit] Cleanup rake tasks.

katsuyoshi/RubyMotion,beni55/RubyMotion,jjaffeux/RubyMotion,incbee/RubyMotion,beni55/RubyMotion,incbee/RubyMotion,HipByte/RubyMotion,hboon/RubyMotion,hboon/RubyMotion,beni55/RubyMotion,HipByte/RubyMotion,katsuyoshi/RubyMotion,jjaffeux/RubyMotion,HipByte/RubyMotion,hboon/RubyMotion,jjaffeux/RubyMotion,incbee/RubyMotion,katsuyoshi/RubyMotion,katsuyoshi/RubyMotion,jjaffeux/RubyMotion,beni55/RubyMotion,incbee/RubyMotion