Revert "usb : Add sysfs files to control port power."

This reverts commit ca9c9d0c92.

Rafael wants more time to work on the user api to handle port power
issues, so let's just revert the sysfs changes for now.

Reported-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Lan Tianyu <tianyu.lan@intel.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/ABI/testing/sysfs-bus-usb

@@ -227,27 +227,3 @@ Contact:	Lan Tianyu <tianyu.lan@intel.com>
 Description:
 		The /sys/bus/usb/devices/.../(hub interface)/portX
 		is usb port device's sysfs directory.
-
-What:		/sys/bus/usb/devices/.../(hub interface)/portX/control
-Date:		August 2012
-Contact:	Lan Tianyu <tianyu.lan@intel.com>
-Description:
-		The /sys/bus/usb/devices/.../(hub interface)/portX/control
-		attribute allows user space to control the power policy on
-		the usb port.
-
-		All ports have one of the following two values for control
-		"on" - port power must be on.
-		"off" - port power must be off.
-
-What:		/sys/bus/usb/devices/.../(hub interface)/portX/state
-Date:		August 2012
-Contact:	Lan Tianyu <tianyu.lan@intel.com>
-Description:
-		The /sys/bus/usb/devices/.../(hub interface)/portX/state
-		attribute allows user space to check hub port's power state.
-
-		All ports have three following states
-		"on"	  -    port power on
-		"off"	  -    port power off
-		"error"	  -    can't get the hub port's power state