Removes the entry name in the directory parent from the procfs. Entries are removed by their name, not by the struct proc_dir_entry returned by the various create functions. Note that this function doesn't recursively remove entries.

Be sure to free the data entry from the struct proc_dir_entry before remove_proc_entry is called (that is: if there was some data allocated, of course). See the section called “A single call back for many files” for more information on using the data entry.