Update .travis.yml

Removed Luna.target from CI build

.travis.yml

@@ -26,7 +26,6 @@ env:
   # via the "travis encrypt" command using the project repo's public key
   - secure: "e6AtFe0HJAHRdmzp4uXx4b+xZaEUUd2jeYiLdIkYuRa84op9iSzCmPj5uT3Vkvqps5snBrDx47Wl1EO9rl+Z91WYp1JgTT5Ek37SKj/ikhJ0HfAYBycU/MRTMO5wXEfwL29G0gjygzFxlUe7t/Y92M/VsvlEQ9nHrtqJ4hQA968="
   matrix:
-  - TARGET=Luna.target
   - TARGET=Mars.target
   - TARGET=Neon.target
   - TARGET=Oxygen.target