qdl: Remove debug print for claim return code

The USB claim return code was printed to the console for debug purposes,
remove this.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

qdl.c

@@ -287,7 +287,6 @@ found:
 		err(1, "failed to disconnect kernel driver");
 
 	ret = ioctl(qdl->fd, USBDEVFS_CLAIMINTERFACE, &intf);
-	printf("claim %d\n", ret);
 	if (ret < 0)
 		err(1, "failed to claim USB interface");