trivial: remove duplicated "from" in CAN USB EMS Kconfig help

Signed-off-by: NThadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/can/usb/Kconfig

@@ -5,6 +5,6 @@ config CAN_EMS_USB
 	tristate "EMS CPC-USB/ARM7 CAN/USB interface"
 	---help---
 	  This driver is for the one channel CPC-USB/ARM7 CAN/USB interface
-	  from from EMS Dr. Thomas Wuensche (http://www.ems-wuensche.de).
+	  from EMS Dr. Thomas Wuensche (http://www.ems-wuensche.de).
 
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