Revert "Handle js_tostring on objects without toString or toValue methods."
Revert "Handle js_tostring on objects without toString or toValue methods."

This reverts commit 7b37ef2b8ad907a3803c5dcc8b184f788f961b80.

ccxvii/mujs,ccxvii/mujs,Frky/mujs,thurday/mujs,guiquanz/mujs,ccxvii/mujs,ccxvii/mujs,evanlabs/mujs,BOGY/mujs,lsm/mujs,earthling42/mujs