usb: gadget: remove duplicate assignment.

We should not make the same assignement twice.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index a87639d..6e4426c 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -165,7 +165,7 @@
 	int				len = USB_BUFSIZ - USB_DT_CONFIG_SIZE;
 	void				*next = buf + USB_DT_CONFIG_SIZE;
 	struct usb_descriptor_header    **descriptors;
-	struct usb_config_descriptor	*c = buf;
+	struct usb_config_descriptor	*c;
 	int				status;
 	struct usb_function		*f;