'devmodel' hasn't actually been used since:
  'commit 3275158f ("parport: remove use of devmodel")'
and everyone now has it set to true and has been fixed up; remove
the flag.

(There are still comments all over about it)
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Acked-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Link: https://lore.kernel.org/r/20240502154823.67235-4-linux@treblig.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>