Unused resources in phet-io

[jonathanolson]

On 1.5-phetio branch, I got these warnings:

$ grunt --brand=phet-io
Running "lint-all" task

Running "clean" task

Running "requirejs-build" task

Running "after-requirejs-build" task
>> Unused images file: BUILD_AN_ATOM/game_icon.png
>> Unused images file: BUILD_AN_ATOM/game_icon_small.png
>> Unused images file: BUILD_AN_ATOM/mass_charge_icon.png
>> Unused images file: BUILD_AN_ATOM/periodic_table_icon.png
>> Unused images file: BUILD_AN_ATOM/question_mark_icon.png
>> Unused images file: BUILD_AN_ATOM/symbol_question_icon.png
>> Unused string: key=BUILD_AN_ATOM/ion, value=Ion
>> Unused string: key=BUILD_AN_ATOM/findTheElement, value=Find the element:
>> Unused string: key=BUILD_AN_ATOM/whatIsTheMassNumber, value=What is the
>> mass number?
>> Unused string: key=BUILD_AN_ATOM/whatIsTheTotalCharge, value=What is the
>> total charge?
>> Unused string: key=BUILD_AN_ATOM/electronsColon, value=Electrons:
>> Unused string: key=BUILD_AN_ATOM/electronsColonPattern, value=Electrons: {0}
>> Unused string: key=BUILD_AN_ATOM/game, value=Game
>> Unused string: key=BUILD_AN_ATOM/neutralAtom, value=Neutral Atom
>> Unused string: key=BUILD_AN_ATOM/protonsColon, value=Protons:
>> Unused string: key=BUILD_AN_ATOM/protonsColonPattern, value=Protons: {0}
>> Unused string: key=BUILD_AN_ATOM/neutronsColon, value=Neutrons:
>> Unused string: key=BUILD_AN_ATOM/neutronsColonPattern, value=Neutrons: {0}
>> Unused string: key=BUILD_AN_ATOM/isIt, value=Is it:
>> Unused string: key=BUILD_AN_ATOM/chooseYourGame, value=Choose Your Game!

[zepumph]

That is because the game screen was removed. for that release.