usb.go no longer needs "C"

usb/libusb.go

@@ -23,6 +23,7 @@ import (
 )
 
 /*
+#cgo pkg-config: libusb-1.0
 #include <libusb.h>
 
 int compact_iso_data(struct libusb_transfer *xfer, unsigned char *status);

usb/usb.go

@@ -16,10 +16,6 @@
 // Package usb provides a wrapper around libusb-1.0.
 package usb
 
-// #cgo pkg-config: libusb-1.0
-// #include <libusb.h>
-import "C"
-
 type Context struct {
 	ctx  *libusbContext
 	done chan struct{}