[media] media/usb: cx231xx-pcb-cfg.h: Remove unused enum _true_false

Signed-off-by: Thiago Farina <tfarina@chromium.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/usb/cx231xx/cx231xx-pcb-cfg.h

@@ -68,11 +68,6 @@ enum USB_SPEED{
 	HIGH_SPEED = 0x1	/* 1: high speed */
 };
 
-enum _true_false{
-	FALSE = 0,
-	TRUE = 1
-};
-
 #define TS_MASK         0x6
 enum TS_PORT{
 	NO_TS_PORT = 0x0,	/* 2'b00: Neither port used. PCB not a Hybrid,