kernel: drop usbdev LED trigger

It was LEDE's trigger that was replaced by upstream usbport one.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

target/linux/generic/patches-4.1/832-ledtrig_usbdev.patch

@@ -1,31 +0,0 @@
---- a/drivers/leds/trigger/Kconfig
-+++ b/drivers/leds/trigger/Kconfig
-@@ -115,4 +115,11 @@ config LEDS_TRIGGER_NETDEV
- 	  This allows LEDs to be controlled by network device activity.
- 	  If unsure, say Y.
- 
-+config LEDS_TRIGGER_USBDEV
-+	tristate "LED USB device Trigger"
-+	depends on USB && LEDS_TRIGGERS
-+	help
-+	  This allows LEDs to be controlled by the presence/activity of
-+	  an USB device. If unsure, say N.
-+
- endif # LEDS_TRIGGERS
---- a/drivers/leds/Makefile
-+++ b/drivers/leds/Makefile
-@@ -66,3 +66,4 @@ obj-$(CONFIG_LEDS_DAC124S085)		+= leds-d
- # LED Triggers
- obj-$(CONFIG_LEDS_TRIGGERS)		+= trigger/
- obj-$(CONFIG_LEDS_TRIGGER_NETDEV)	+= ledtrig-netdev.o
-+obj-$(CONFIG_LEDS_TRIGGER_USBDEV)	+= ledtrig-usbdev.o
---- a/drivers/leds/ledtrig-usbdev.c
-+++ b/drivers/leds/ledtrig-usbdev.c
-@@ -24,7 +24,6 @@
- #include <linux/list.h>
- #include <linux/spinlock.h>
- #include <linux/device.h>
--#include <linux/sysdev.h>
- #include <linux/timer.h>
- #include <linux/ctype.h>
- #include <linux/slab.h>