don't use antialiased font rendering
don't use antialiased font rendering

we had put in this css rule to render text antialiased
but it actually makes things less readable.

test plan: load a page, make sure text is readable

Change-Id: I4bc2ac5eb4d88564fb20719a1d119b37fbfc6e5e
Reviewed-on: https://gerrit.instructure.com/15689
Tested-by: Jenkins <d95b56ce41a2e1ac4cecdd398defd7414407cc08@instructure.com>
Reviewed-by: Chris Hart <711c73f64afdce07b7e38039a96d2224209e9a6c@12spokes.com>

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