remove redundant regex in latex code
remove redundant regex in latex code

Stvad/anki,go38/anki,ospalh/libanki3,Arthaey/anki,sunclx/anki,weihautin/anki,florianjacob/anki,hssm/anki,kenjhim/anki,jkitching/anki,hssm/anki,xuewenfei/anki,LucasCabello/anki,jakesyl/ruby-card,subfusc/anki,jakesyl/ruby-card,socialpercon/anki-1,weihautin/anki,holycrepe/anki,eduOS/anki,abeyer/anki