remove borders and bg from code tags within pre's
remove borders and bg from code tags within pre's

JackDanger/sentry,Kryz/sentry,alexm92/sentry,jean/sentry,ifduyue/sentry,looker/sentry,alexm92/sentry,fotinakis/sentry,felixbuenemann/sentry,mitsuhiko/sentry,zenefits/sentry,songyi199111/sentry,ngonzalvez/sentry,daevaorn/sentry,BuildingLink/sentry,kevinlondon/sentry,wong2/sentry,gencer/sentry,ifduyue/sentry,gencer/sentry,jean/sentry,looker/sentry,korealerts1/sentry,nicholasserra/sentry,daevaorn/sentry,Kryz/sentry,fotinakis/sentry,looker/sentry,fotinakis/sentry,songyi199111/sentry,kevinlondon/sentry,jean/sentry,BayanGroup/sentry,beeftornado/sentry,hongliang5623/sentry,JamesMura/sentry,hongliang5623/sentry,ngonzalvez/sentry,mitsuhiko/sentry,wong2/sentry,Natim/sentry,daevaorn/sentry,BuildingLink/sentry,mvaled/sentry,felixbuenemann/sentry,gencer/sentry,nicholasserra/sentry,fuziontech/sentry,beeftornado/sentry,JackDanger/sentry,looker/sentry,jean/sentry,songyi199111/sentry,fotinakis/sentry,ngonzalvez/sentry,jean/sentry,BayanGroup/sentry,gencer/sentry,mvaled/sentry,fuziontech/sentry,zenefits/sentry,gencer/sentry,kevinlondon/sentry,daevaorn/sentry,JackDanger/sentry,JamesMura/sentry,mvaled/sentry,ifduyue/sentry,hongliang5623/sentry,zenefits/sentry,imankulov/sentry,BuildingLink/sentry,wong2/sentry,imankulov/sentry,mvaled/sentry,imankulov/sentry,Kryz/sentry,JamesMura/sentry,fuziontech/sentry,ifduyue/sentry,BuildingLink/sentry,BayanGroup/sentry,Natim/sentry,korealerts1/sentry,ifduyue/sentry,Natim/sentry,JamesMura/sentry,BuildingLink/sentry,alexm92/sentry,korealerts1/sentry,felixbuenemann/sentry,JamesMura/sentry,beeftornado/sentry,mvaled/sentry,zenefits/sentry,nicholasserra/sentry,mvaled/sentry,looker/sentry,zenefits/sentry