To remove or rename a file, you first need to find it in the list of files under “My work”. This area normally shows only those files that you have changed since your last commit: if it isn't one of those, toggle the “Show all files” option at the bottom of the window.
To remove a file from version control so that changes to it are no longer tracked:
1. Select the file you want to remove in the list of files under “My work”.
2. Click Remove in the toolbar on the left of the window
The file will be moved to the “Removed” list. This tells Mercurial to stop tracking the file the next time you commit. The file itself is not removed from the disc: you will need to do that using your system file manager afterwards.
To rename or copy a file:
1. Select the file you want to remove in the list of files under “My work”.
2. Right-click and select “Rename..." or “Copy..." on the context menu
3. Enter a new name for the file.