Default [Q] Internal , Sdcard0 , Ext sdcard 2+1 having problem here how unmount extra one?

UMmm let me get strainght i used external to inernal sd (app something like that i dont remeber name exactly) by that i mounted sd card on internal but after that i unistalled it (i wanted to switch sd and internal but it mounted it ) then i installed link2sd but when i use it it show "App2sd is not supported by your device .because your device has a primary extarnal storage which is emulated from internal storage" and when i check Link2sd storage info it Shows

Internal
/data

Sd card
/storage/sdcard0

Ext.SD
/storage/extSDCard


now i am having 3 instead of 2 now anyone can guide me how to umount it

help will apreciated

plz ask if anymore info is needed

thnx in advance