https://forums.d2jsp.org/topic.php?t=79426957&f=34
Was adviced to ask in here, tried to drag item in inventory and didnt work neither double tap. I play on Galaxy J7 and have no idea how to remove them.
Thanks for help!

When you have put a item on the marketplace you have to wait 24hours iirc before you can remove it. ( someone might have to correct me on this )
Other useful info about marketplace you can find here:
https://ladderslasher.d2jsp.org/index.php?g=1#Marketplace

Use the LS portal to find other useful info

You may also access the MP with a mule and buy the item from yourself.

You will, however, have to pay the 5% transaction fee when you do this

Hope to see you around more. WEeeeeeeeeeeeee