Deletes the specified key definition.
    Format
      DELETE KEY   key-specifier
1 – Qualifier
1.1 /IF_STATE
       /IF_STATE=GOLD
       /NOIF_STATE (D)
    Specifies that the key definition to be deleted is for the GOLD
    state. The default is to delete the key definition for the default
    state.
2 – Parameter
 key-specifier
    Indicates the keyword or single printing character for the key to
    be deleted. Valid key-specifiers include all keynames recognized
    by the DEFINE KEY command.