prism.css: Remove `-webkit-tab-size`
prism.css: Remove `-webkit-tab-size`

WebKit implemented the unprefixed `tab-size` right away; `-webkit-tab-size` has never been implemented.
CupOfTea696/prism,danielberkompas/prism,Golmote/prism,alex-zhang/prism,byverdu/prism,aviaryan/prism,danielberkompas/prism,mcanthony/prism,codedogfish/prism,jalleyne/prism,zeitgeist87/prism,alex-zhang/prism,UnityTech/prism,lgiraudel/prism,codedogfish/prism,manfer/prism,aviaryan/prism,apiaryio/prism,jalleyne/prism,jalleyne/prism,westonganger/prism,valorkin/prism,zeitgeist87/prism,Golmote/prism,mcanthony/prism,zeitgeist87/prism,zeitgeist87/prism,mAAdhaTTah/prism,desertjim/prism,codedogfish/prism,desertjim/prism,jcsesecuneta/prism,chaosshen/prism,mAAdhaTTah/prism,gibsjose/prism,CupOfTea696/prism,EpicTimoZz/prism,jcsesecuneta/prism,iamsowmyan/prism,mAAdhaTTah/prism,aviaryan/prism,manfer/prism,valorkin/prism,iwatakeshi/prism,mcanthony/prism,PrismJS/prism,MakeNowJust/prism,iwatakeshi/prism,iwatakeshi/prism,aviaryan/prism,jalleyne/prism,mcanthony/prism,1st1/prism,valorkin/prism,alex-zhang/prism,MakeNowJust/prism,CupOfTea696/prism,mAAdhaTTah/prism,uranusjr/prism,nauzilus/prism,Conaclos/prism,codedogfish/prism,westonganger/prism,EpicTimoZz/prism,Golmote/prism,byverdu/prism,Golmote/prism,PrismJS/prism,jalleyne/prism,iamsowmyan/prism,byverdu/prism,iamsowmyan/prism,nauzilus/prism,markcarver/prism,markcarver/prism,alex-zhang/prism,iwatakeshi/prism,mooreInteractive/prism,nauzilus/prism,danielberkompas/prism,desertjim/prism,aviaryan/prism,byverdu/prism,nauzilus/prism,JustinBeckwith/prism,markcarver/prism,Golmote/prism,murtaugh/prism,danielberkompas/prism,kwangkim/prism,lgiraudel/prism,chaosshen/prism,iwatakeshi/prism,mcanthony/prism,apfelbox/prism,chaosshen/prism,RobLoach/prism,nauzilus/prism,zeitgeist87/prism,danielberkompas/prism,mooreInteractive/prism,desertjim/prism,mAAdhaTTah/prism,EpicTimoZz/prism,PrismJS/prism,MakeNowJust/prism,desertjim/prism,MakeNowJust/prism,markcarver/prism,UnityTech/prism,UnityTech/prism,codedogfish/prism,chaosshen/prism,murtaugh/prism,MakeNowJust/prism,CupOfTea696/prism,alex-zhang/prism,PrismJS/prism,CupOfTea696/prism,kwangkim/prism,iamsowmyan/prism,PrismJS/prism,JustinBeckwith/prism,1st1/prism,chaosshen/prism,markcarver/prism,byverdu/prism,gibsjose/prism,iamsowmyan/prism,segmentio/prism,RobLoach/prism