scsi_id: we don't use DEVPATH env var anymore, update man

index 4656e68..5f4d997 100644
@@ -98,13 +98,6 @@ Generate verbose debugging output.
 Display version number and exit.
 .RE
 
-.SH ENVIRONMENT
-
-If the DEVPATH environment variable is set, scsi_id assumes it has been
-invoked via udev (or some other hotplug program), and all errors or
-warnings are sent using syslog.
-.P
-
 .SH "FILES"
 .nf
 .ft B