Remove old 'update' script.

Updates to gpio help text.

gpio/gpio.c

@@ -65,11 +65,11 @@ int wpMode ;
 char *usage = "Usage: gpio -v                Show Version\n"
               "       gpio -h                Show Help\n"
               "       gpio -V                Show gpio Layout version\n"
-              "       gpio [-g|-1|-p] ...    Use bcm-gpio | physical | piFace pin numbering scheme...\n"
+              "       gpio [-g|-1|-p] ...    Use bcm-gpio/physical/piFace pin numbering scheme...\n"
               "       [-x extension:params] [[ -x ...]] ...\n"
               "       gpio <mode/read/write/aread/awritewb/pwm/pwmTone/clock> ...\n"
               "       gpio <toggle/blink> <pin>\n"
-              "       gpio readall\n"
+              "       gpio readall/allreadall\n"
               "       gpio unexportall/exports\n"
               "       gpio export/edge/unexport ...\n"
               "       gpio wfi <pin> <mode>\n"

update

@@ -1,5 +0,0 @@
-#!/bin/sh
-
-# update - update source files from master on yakko
-
-rsync -aHx --exclude='*.o' --exclude='*~' -v --delete gordon@yakko:rpi/git/wiringPi/ .