remove file named single quote

When I use VIM, sometimes I careless enter the wrong key and saved the file using single quote as file name.
[root@myserver page_render]# ls
'                    optin.php
You see the ' as  file name above. How to delete it?

I tried:
[root@myserver page_render]# rm '
>
It failed. I knew it can be deleted thru FTP client like WinSCP, etc. But just figure out how to delete it from command line. It is easy, but you have to escape it, like following,

[root@myserver page_render]# rm \'
rm: remove regular file `\''? y