removed "next chapter" for PDFs
removed "next chapter" for PDFs

Should actually also be done for EPUBs without TOC, but somehow I can't get it to work
Frenzie/koreader,NiLuJe/koreader,ashang/koreader,pazos/koreader,ashhher3/koreader,frankyifei/koreader,Frenzie/koreader,mihailim/koreader,houqp/koreader,apletnev/koreader,robert00s/koreader,koreader/koreader,noname007/koreader,NickSavage/koreader,chrox/koreader,mwoz123/koreader,Markismus/koreader,poire-z/koreader,Hzj-jie/koreader,koreader/koreader,NiLuJe/koreader,lgeek/koreader,poire-z/koreader,chihyang/koreader