don't search for files by class name
don't search for files by class name

This code was searching for files in the files UI by a
class name that doesn't exist. Some of the names caused
chrome to freeze when trying this search.

Test Plan:
 * Clicking on a file in the left area of the files area
     should not cause chrome to freeze.

closes #CNVS-3276

Change-Id: I9ade59f4290008091eb5e4531d4dfd5eb752531e
Reviewed-on: https://gerrit.instructure.com/17474
Tested-by: Jenkins <d95b56ce41a2e1ac4cecdd398defd7414407cc08@instructure.com>
Reviewed-by: Jeremy Stanley <b3f594e10a9edcf5413cf1190121d45078c62290@instructure.com>
QA-Review: Adam Phillipps <0e18f44c1fec03ec4083422cb58ba6a09ac4fb2a@instructure.com>

antoniuslin/canvas-lms,sfu/canvas-lms,grahamb/canvas-lms,jay3126/canvas-lms,SwinburneOnline/canvas-lms,redconfetti/canvas-lms,roxolan/canvas-lms,whalejasmine/canvas-lms,arrivu/arrivu-lms,greyhwndz/canvas-lms,greyhwndz/canvas-lms,instructure/canvas-lms,snehakachroo1/LSI_replica,instructure/canvas-lms,samuels410/greatlakes-lms,landonwilkins/canvas-lms,narigone/canvas,arrivu/arrivu-lms,SwinburneOnline/canvas-lms,wye0220/shindig-canvas,HotChalk/canvas-lms,sfu/canvas-lms,greyhwndz/canvas-lms,jay3126/canvas-lms,arrivu/hoodemo,sfu/canvas-lms,arrivu/jigsaw-lms,arrivu/jigsaw-lms,wimemx/Canvas,wimemx/Canvas,whalejasmine/canvas-lms,skmezanul/canvas-lms,fronteerio/canvas-lms,utkarshx/canvas-lms,wrdsb/canvas-lms,redconfetti/canvas-lms,Unow/ins,Unow/canvas-lms,narigone/canvas,landonwilkins/canvas-lms,sli7246/canvas_branch,va7map/canvas-lms,skmezanul/canvas-lms,AndranikMarkosyan/lms,snehakachroo1/LSI_replica,roxolan/canvas-lms,eCNAP/CANVAS,Unow/ins,loganrun/pincan,juoni/canvas-lms,dgynn/canvas-lms,snehakachroo1/LSI_replica,tgroshon/canvas-lms,grahamb/canvas-lms,kyroskoh/canvas-lms,utkarshx/canvas-lms,SwinburneOnline/canvas-lms,leftplusrightllc/canvas-lms,greyhwndz/canvas-lms,narigone/canvas,eCNAP/CANVAS,efrj/canvas-lms,sdeleon28/canvas-lms,wimemx/Canvas,eCNAP/CANVAS,Rvor/canvas-lms,rup/Tarrax,venturehive/canvas-lms,shidao-fm/canvas-lms,leftplusrightllc/canvas-lms,whalejasmine/canvas-lms,wrdsb/canvas-lms,snehakachroo1/LSI_replica,fronteerio/canvas-lms,whalejasmine/canvas-lms,roxolan/canvas-lms,sdeleon28/canvas-lms,fronteerio/canvas-lms,wrdsb/canvas-lms,wye0220/shindig-canvas,kyroskoh/canvas-lms,redconfetti/canvas-lms,loganrun/pincan,grahamb/canvas-lms,usmschuck/canvas,wye0220/shindig-canvas,sli7246/canvas_branch,Rvor/canvas-lms,Rvor/canvas-lms,HotChalk/canvas-lms,arrivu/arrivu-lms,landonwilkins/canvas-lms,merichar/canvas-lms,sfu/canvas-lms,venturehive/canvas-lms,sdeleon28/canvas-lms,efrj/canvas-lms,shidao-fm/canvas-lms,arrivu/hoodemo,eCNAP/CANVAS,matematikk-mooc/canvas-lms,AndranikMarkosyan/lms,juoni/canvas-lms,grahamb/canvas-lms,gbleydon/canvas-lms,antoniuslin/canvas-lms,sli7246/canvas_branch,dgynn/canvas-lms,tgroshon/canvas-lms,merichar/canvas-lms,grahamb/canvas-lms,instructure/canvas-lms,antoniuslin/canvas-lms,utkarshx/canvas-lms,arrivu/jigsaw-lms,matematikk-mooc/canvas-lms,jay3126/canvas-lms,utkarshx/canvas-lms,SwinburneOnline/canvas-lms,HotChalk/canvas-lms,va7map/canvas-lms,arrivu/hoodemo,HotChalk/canvas-lms,Jyaasa/canvas-lms,jay3126/canvas-lms,gbleydon/canvas-lms,djbender/canvas-lms,djbender/canvas-lms,usmschuck/canvas,va7map/canvas-lms,skmezanul/canvas-lms,matematikk-mooc/canvas-lms,usmschuck/canvas,ShreniiNepal/shrenii_lmp,Unow/ins,sfu/canvas-lms,dgynn/canvas-lms,kyroskoh/canvas-lms,venturehive/canvas-lms,merichar/canvas-lms,djbender/canvas-lms,djbender/canvas-lms,narigone/canvas,ShreniiNepal/shrenii_lmp,arrivu/qibla-ecampus,leftplusrightllc/canvas-lms,instructure/canvas-lms,Jyaasa/canvas-lms,Unow/canvas-lms,usmschuck/canvas,fronteerio/canvas-lms,roxolan/canvas-lms,ShreniiNepal/shrenii_lmp,venturehive/canvas-lms,shidao-fm/canvas-lms,rup/Tarrax,ShreniiNepal/shrenii_lmp,Jyaasa/canvas-lms,samuels410/greatlakes-lms,sfu/canvas-lms,shidao-fm/canvas-lms,Rvor/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,AndranikMarkosyan/lms,kyroskoh/canvas-lms,arrivu/qibla-ecampus,arrivu/qibla-ecampus,redconfetti/canvas-lms,tgroshon/canvas-lms,landonwilkins/canvas-lms,leftplusrightllc/canvas-lms,skmezanul/canvas-lms,efrj/canvas-lms,gbleydon/canvas-lms,instructure/canvas-lms,dgynn/canvas-lms,samuels410/greatlakes-lms,Unow/canvas-lms,tgroshon/canvas-lms,rup/Tarrax,matematikk-mooc/canvas-lms,juoni/canvas-lms,sdeleon28/canvas-lms,AndranikMarkosyan/lms,instructure/canvas-lms,loganrun/pincan,efrj/canvas-lms,Jyaasa/canvas-lms,antoniuslin/canvas-lms,juoni/canvas-lms,va7map/canvas-lms,samuels410/greatlakes-lms,wrdsb/canvas-lms