Remove reference to device minor numbers in psm(4) man page.

The number returned by stat(2) is generated automatically, so it is not
possible to deduce whether the device is blocking or not.

MFC after:	1 week

1 files changed, 1 insertions, 18 deletions

diff --git a/share/man/man4/psm.4 b/share/man/man4/psm.4
index ed911bd..ef23612 100644
--- a/share/man/man4/psm.4
+++ b/share/man/man4/psm.4
@@ -179,22 +179,6 @@ The driver has an internal variable which governs the effect of
 the acceleration.
 Its value can be modified via the driver flag
 or via an ioctl call.
-.Ss Device Number
-The minor device number of the
-.Nm
-is made up of:
-.Bd -literal -offset indent
-minor = (`unit' << 1) | `non-blocking'
-.Ed
-.Pp
-where `unit' is the device number (usually 0) and the `non-blocking' bit
-is set to indicate ``do not block waiting for mouse input,
-return immediately''.
-The `non-blocking' bit should be set for \fIXFree86\fP,
-therefore the minor device number usually used for \fIXFree86\fP is 1.
-See
-.Sx FILES
-for device node names.
 .Sh DRIVER CONFIGURATION
 .Ss Kernel Configuration Options
 There are following kernel configuration options to control the
@@ -682,8 +666,7 @@ movement counts as described in
 .It Pa /dev/psm0
 `non-blocking' device node
 .It Pa /dev/bpsm0
-`blocking' device node under
-.Em devfs .
+`blocking' device node
 .El
 .Sh EXAMPLES
 In order to install the