add remove large old collections script
add remove large old collections script

UCSC-MedBook/MedBook,UCSC-MedBook/MedBook_,UCSC-MedBook/MedBook_,UCSC-MedBook/MedBook_,UCSC-MedBook/MedBook_,UCSC-MedBook/MedBook,UCSC-MedBook/MedBook_,UCSC-MedBook/MedBook_