remove canvas- from production scribd_user
remove canvas- from production scribd_user

closes CNVS-10190

test plan
 - in production upload a scribdable doc
 - doc should render

Change-Id: I1e6ed767fe9359250e2966bcee34c99ec1548495
Reviewed-on: https://gerrit.instructure.com/27939
Tested-by: Jenkins <d95b56ce41a2e1ac4cecdd398defd7414407cc08@instructure.com>
Reviewed-by: Jacob Fugal <f862f167b85d41b225785c70d70808bc7337c1fe@instructure.com>
Product-Review: Rob Orton <7e09c9d3e96378bf549fc283fd6e1e5b7014cc33@instructure.com>
QA-Review: Rob Orton <7e09c9d3e96378bf549fc283fd6e1e5b7014cc33@instructure.com>

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