delete unused file

diff -L drivers/char/rio/cdproto.h -puN drivers/char/rio/cdproto.h~remove_file-drivers_char_rio_cdproto.h /dev/null
@@ -1,55 +0,0 @@
-/* 
- *
- *  (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
- *
- *
- *      This program is free software; you can redistribute it and/or modify
- *      it under the terms of the GNU General Public License as published by
- *      the Free Software Foundation; either version 2 of the License, or
- *      (at your option) any later version.
- *
- *      This program is distributed in the hope that it will be useful,
- *      but WITHOUT ANY WARRANTY; without even the implied warranty of
- *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *      GNU General Public License for more details.
- *
- *      You should have received a copy of the GNU General Public License
- *      along with this program; if not, write to the Free Software
- *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-#ifndef _cirrusprots_h
-#define _cirrusprots_h
-
-#ifdef RTA
-extern void cd1400_reset ( int uart) ;
-extern void cd1400_init ( int uart ) ;
-extern void ccr_wait ( int priority, int port) ;
-extern void cd1400_txstart( int port) ;
-extern void cd1400_rxstart ( int port) ;
-extern void command_acknowledge ( PHB *port_header ) ;
-extern int close_port ( ushort port, PHB *port_header, ushort preemptive, int pseudo) ;
-extern void command_preemptive ( PKT *packet) ;
-extern void rup_service ( void ) ;
-extern ushort GetModemLines(struct PHB *, register short *);
-extern void cd1400_intr (Process *cirrus_p, ushort *RtaType) ;
-extern void cd1400_mdint ( short port) ;
-extern void cd1400_rxint ( short port) ;
-extern void cd1400_rxexcept ( short port) ;
-extern void cd1400_txdata ( short port, PHB *port_header, PKT *packet) ;
-extern void cd1400_fast_clock(void);
-extern void cd1400_map_baud ( ushort host_rate, ushort *prescaler, ushort *divisor) ;
-extern void cd1400_modem ( ushort port, ushort way) ;
-extern void cd1400_txcommand ( short port, PHB *port_header, PKT *packet) ;
-extern void cd1400_txint ( int port) ;
-void Rprintf( char *RIOPrBuf, char *Str, ... );
-#if defined(DCIRRUS)
-void debug_packet(PKT *pkt, int option, char *string, int channel);
-#endif	/* defined(DCIRRUS) */
-#endif
-
-#ifdef HOST
-extern void wflush (PHB *);
-extern void command_preemptive (PKT *);
-#endif
-
-#endif /* _cirrusprots_h */