Google Drive / Getting Started with Drive 

Delete documents in Drive

You can delete a document from your docs list, which will move it to the bin. When you delete a document, it is moved to the Bin folder until this folder is emptied. You can restore a document deleted in error by moving it from the bin back to the docs list. 

If you wish to delete multiple documents, you can select them first as follows:

To delete documents:

If you change your mind about deleting the document, you can click on the Undo link in the banner that appears along the top of the screen after you have clicked on the Remove button 

You can also delete a single document by right-clicking over the document and choosing the Remove option: 

When you delete a document, it is moved to the Bin folder until this folder is emptied. You can click on the Bin link in the navigation pane, then restore a deleted document by clicking on the document, then on the Restore button.