rm public/blank_submission.html, it is not used
rm public/blank_submission.html, it is not used

this is a remnant from 2008 that never got removed

Change-Id: I38fc3e603f94d044e5d8cd771fe5317d850f91dd
Reviewed-on: https://gerrit.instructure.com/55490
Tested-by: Jenkins
Reviewed-by: Ethan Vizitei <73eeb0b2f65d05a906adf3b21ee1f9f5a2aa3c1c@instructure.com>
Reviewed-by: Jacob Fugal <f862f167b85d41b225785c70d70808bc7337c1fe@instructure.com>
Product-Review: Ryan Shaw <ea3cd978650417470535f3a4725b6b5042a6ab59@instructure.com>
QA-Review: Ryan Shaw <ea3cd978650417470535f3a4725b6b5042a6ab59@instructure.com>

eCNAP/CANVAS,juoni/canvas-lms,matematikk-mooc/canvas-lms,snehakachroo1/LSI_replica,juoni/canvas-lms,utkarshx/canvas-lms,leftplusrightllc/canvas-lms,sdeleon28/canvas-lms,AndranikMarkosyan/lms,Rvor/canvas-lms,dgynn/canvas-lms,ShreniiNepal/shrenii_lmp,fronteerio/canvas-lms,Jyaasa/canvas-lms,leftplusrightllc/canvas-lms,HotChalk/canvas-lms,greyhwndz/canvas-lms,snehakachroo1/LSI_replica,wrdsb/canvas-lms,djbender/canvas-lms,efrj/canvas-lms,juoni/canvas-lms,greyhwndz/canvas-lms,greyhwndz/canvas-lms,sfu/canvas-lms,instructure/canvas-lms,shidao-fm/canvas-lms,eCNAP/CANVAS,antoniuslin/canvas-lms,instructure/canvas-lms,Jyaasa/canvas-lms,skmezanul/canvas-lms,utkarshx/canvas-lms,HotChalk/canvas-lms,wrdsb/canvas-lms,kyroskoh/canvas-lms,instructure/canvas-lms,narigone/canvas,fronteerio/canvas-lms,efrj/canvas-lms,grahamb/canvas-lms,juoni/canvas-lms,skmezanul/canvas-lms,roxolan/canvas-lms,sfu/canvas-lms,fronteerio/canvas-lms,instructure/canvas-lms,ShreniiNepal/shrenii_lmp,skmezanul/canvas-lms,kyroskoh/canvas-lms,dgynn/canvas-lms,matematikk-mooc/canvas-lms,antoniuslin/canvas-lms,narigone/canvas,jay3126/canvas-lms,dgynn/canvas-lms,jay3126/canvas-lms,fronteerio/canvas-lms,ShreniiNepal/shrenii_lmp,efrj/canvas-lms,tgroshon/canvas-lms,venturehive/canvas-lms,narigone/canvas,grahamb/canvas-lms,sfu/canvas-lms,instructure/canvas-lms,redconfetti/canvas-lms,AndranikMarkosyan/lms,Jyaasa/canvas-lms,shidao-fm/canvas-lms,Rvor/canvas-lms,eCNAP/CANVAS,ShreniiNepal/shrenii_lmp,redconfetti/canvas-lms,antoniuslin/canvas-lms,HotChalk/canvas-lms,SwinburneOnline/canvas-lms,eCNAP/CANVAS,greyhwndz/canvas-lms,jay3126/canvas-lms,whalejasmine/canvas-lms,djbender/canvas-lms,snehakachroo1/LSI_replica,roxolan/canvas-lms,kyroskoh/canvas-lms,dgynn/canvas-lms,utkarshx/canvas-lms,grahamb/canvas-lms,AndranikMarkosyan/lms,tgroshon/canvas-lms,SwinburneOnline/canvas-lms,SwinburneOnline/canvas-lms,SwinburneOnline/canvas-lms,sfu/canvas-lms,jay3126/canvas-lms,redconfetti/canvas-lms,kyroskoh/canvas-lms,narigone/canvas,matematikk-mooc/canvas-lms,Rvor/canvas-lms,djbender/canvas-lms,sdeleon28/canvas-lms,redconfetti/canvas-lms,instructure/canvas-lms,shidao-fm/canvas-lms,grahamb/canvas-lms,leftplusrightllc/canvas-lms,roxolan/canvas-lms,whalejasmine/canvas-lms,djbender/canvas-lms,roxolan/canvas-lms,HotChalk/canvas-lms,wrdsb/canvas-lms,shidao-fm/canvas-lms,sfu/canvas-lms,Rvor/canvas-lms,leftplusrightllc/canvas-lms,instructure/canvas-lms,matematikk-mooc/canvas-lms,grahamb/canvas-lms,whalejasmine/canvas-lms,tgroshon/canvas-lms,venturehive/canvas-lms,Jyaasa/canvas-lms,snehakachroo1/LSI_replica,efrj/canvas-lms,AndranikMarkosyan/lms,sfu/canvas-lms,antoniuslin/canvas-lms,whalejasmine/canvas-lms,sfu/canvas-lms,sdeleon28/canvas-lms,venturehive/canvas-lms,utkarshx/canvas-lms,sdeleon28/canvas-lms,venturehive/canvas-lms,tgroshon/canvas-lms,skmezanul/canvas-lms,wrdsb/canvas-lms