general cleanup.  remove bits that don't exist

Reference: /n/atom/patch/applied2013/usb4clean
Date: Sun Dec 29 15:27:40 CET 2013
Signed-off-by: quanstro@quanstro.net

--- /sys/man/4/usb	Sun Dec 29 15:27:31 2013
+++ /sys/man/4/usb	Sun Dec 29 15:27:32 2013
@@ -1,7 +1,6 @@
 .TH USB 4
 .SH NAME
 audio,
-ccid,
 disk,
 ether,
 kb,
@@ -9,7 +8,8 @@
 probe,
 serial,
 usbeject,
-usbfat:
+usbfat
+usbsd
 \- Universal Serial Bus device drivers
 .SH SYNOPSIS
 .B usb/kb
@@ -45,6 +45,8 @@
 .I disk ...
 ]
 .PP
+.B usbsd
+.PP
 .B usb/audio
 [
 .B -dpV
@@ -94,24 +96,6 @@
 .I dev ...
 ]
 .PP
-.B usb/ccid
-[
-.B -d
-]
-.ig
-.PP
-.B usb/ibuddy
-[
-.B -Dd
-] [
-.B -m
-.I mnt
-] [
-.B -s
-.I srv
-] [
-.I dev ...
-]
 ..
 .B usb/probe
 .SH DESCRIPTION
@@ -235,13 +219,14 @@
 .BI sdU N
 unmounts all partitions from disk with USB target
 .IR N .
-.ig
-An argument
-.BI sdU N . M
-or
-.BI sdU N . M . P
-.\" TODO: fill in missing words
-..
+The script
+.B usbsd
+uses
+.IR sdloop (3)
+to present a USB disk as a
+.IR sd (3)
+device and partition it as per
+.IR prep (8).
 .SS Printers
 .I Print
 provides a single file can be written to print on a USB printer.
@@ -401,7 +386,7 @@
 secondarily by channel.
 Samples occupy the minimum integral number of bytes.
 Read and write operations of arbitrary size are allowed.
-.
+.ig
 .SS Ccid
 .I Ccid
 discovers and configures SIM or SAM cards using the CCID standard.
@@ -435,54 +420,6 @@
 When the smartcard disappears,
 all reads and write fail until the file is reopened and
 a new ATR is written to it.
-.
-.ig
-.SS Ibuddy
-.PP
-Ibuddy supports a USB I-buddy toy, a little winged-demon.
-The driver provides one directory per attached toy with a single
-.BR ctl
-file to control the device.
-Directories are named
-.BR ibuddyN ,
-being
-.I N
-the corresponding usb device number.
-When read, the
-.BR ctl
-file provides the state of the device in this form:
-.IP
-.EX
-hips right|left
-wings open|close
-red on|off
-green on|off
-blue on|off
-heart on|off
-.EE
-.PP
-Each line describes the status of one feature.
-.IR  Red ,
-.IR  blue ,
-and
-.IR  green
-are the different leds in the head of
-the toy.
-.IR  Heart
-represents the red led in the chest of
-the toy.
-.IR  Wings
-represents the status of the wings, which
-can be closed or open.
-.IR  Hips
-represents the orientation
-of the toy (left or right, from the figure's point of view).
-.PP
-Lines can be written to the
-.BR ctl
-file to command the device.
-Multiple lines (six at most) can be written
-at once, with one action per line.
 ..
 .SH SOURCE
 .B /sys/src/cmd/usb
@@ -490,6 +427,7 @@
 .IR kbin (3),
 .IR mouse (3),
 .IR sd (3),
+.IR sdloop (3),
 .IR uart (3),
 .IR usb (3),
 .IR usbd (4),