When you delete files from network drives, they do not go into Recycle bin. I have found a workaround, where I change the location of one of my personal folders (for example Saved Games under C:/users/username/) to the root of my network drive.
This way, when I delete a file from a network drive, it ends up in Recycle bin.
This works in all other file explorers and I only cannot get it to work in MC, because it uses it's own delete routine. But I love MC the most, so I'm in a pickle here