rm older rbx for travis
rm older rbx for travis

MakeYourLaws/MakeYourLaws,saizai/MakeYourLaws,MakeYourLaws/MakeYourLaws,saizai/MakeYourLaws,MakeYourLaws/MakeYourLaws,saizai/MakeYourLaws,MakeYourLaws/MakeYourLaws,saizai/MakeYourLaws