Update cleanup script for new filenames.
Update cleanup script for new filenames.

parvmor/codeworld,pranjaltale16/codeworld,alphalambda/codeworld,venkat24/codeworld,venkat24/codeworld,alphalambda/codeworld,venkat24/codeworld,pranjaltale16/codeworld,stefan-j/codeworld,pranjaltale16/codeworld,three/codeworld,nomeata/codeworld,stefan-j/codeworld,tgdavies/codeworld,google/codeworld,tgdavies/codeworld,three/codeworld,google/codeworld,three/codeworld,parvmor/codeworld,alphalambda/codeworld,google/codeworld,tgdavies/codeworld,nomeata/codeworld,nomeata/codeworld,parvmor/codeworld,stefan-j/codeworld