Update emission/core/get_database.py
Update emission/core/get_database.py

Remove random, unnecessary get collection from DB

Co-authored-by: shankari <52585e8ec27a51541558101da8c5ed713d6a4cbe@eecs.berkeley.edu>
e-mission/e-mission-server,e-mission/e-mission-server,e-mission/e-mission-server,e-mission/e-mission-server