I can't explain the remove bit,
In the British Public (i.e. private) School system, the classes in secondary school are typically named, starting from the most junior: Shell, Remove, Fifth, First-year Sixth, Second-year Sixth, Upper Sixth; thus, Shell is the class under Remove.
but I did wonder if a deleted (Unix shell command rm) file that hasn't had its space used for something else could be termed a 'ghost'.
I don't know a special term for a deleted file. A process that has stopped responding but is still using resources is called a zombie, though.