remove associated scroll mode setting with zoom mode
remove associated scroll mode setting with zoom mode

chrox/koreader,NickSavage/koreader,houqp/koreader,mihailim/koreader,koreader/koreader,mwoz123/koreader,apletnev/koreader,Markismus/koreader,poire-z/koreader,noname007/koreader,Frenzie/koreader,chihyang/koreader,NiLuJe/koreader,Hzj-jie/koreader,koreader/koreader,Frenzie/koreader,ashhher3/koreader,robert00s/koreader,NiLuJe/koreader,pazos/koreader,frankyifei/koreader,ashang/koreader,lgeek/koreader,poire-z/koreader