Staging: comedi: kcomedilib: comedi_do_insn is now static

No one else calls this function, so mark it static.
Now we can strip out the unneeded functionality in here as well.

Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/comedi/comedilib.h

@@ -33,7 +33,4 @@ int comedi_dio_bitfield(void *dev, unsigned int subdev, unsigned int mask,
 int comedi_find_subdevice_by_type(void *dev, int type, unsigned int subd);
 int comedi_get_n_channels(void *dev, unsigned int subdevice);
 
-/* internal to kcomedilb */
-int comedi_do_insn(void *dev, struct comedi_insn *insn);
-
 #endif

drivers/staging/comedi/kcomedilib/kcomedilib_main.c

@@ -84,7 +84,7 @@ EXPORT_SYMBOL(comedi_close);
  *	COMEDI_INSN
  *	perform an instruction
  */
-int comedi_do_insn(void *d, struct comedi_insn *insn)
+static int comedi_do_insn(void *d, struct comedi_insn *insn)
 {
 	struct comedi_device *dev = (struct comedi_device *)d;
 	struct comedi_subdevice *s;