Update DFU instructions

src/pongo_helper.c

@@ -17,7 +17,6 @@
 #include <ANSI-color-codes.h>
 
 bool device_has_booted = 0;
-bool force_usbdevice = 0;
 int pongo_thr_running = 0;
 
 #define ERR(...) LOG(LOG_VERBOSE, __VA_ARGS__)
@@ -70,7 +69,6 @@ void *pongo_usb_callback(stuff_t *arg) {
 	if (ramdisk_dmg_lzma_len != 0)
 #endif
 	{
-		if (force_usbdevice) strncat(xargs_cmd, " AppleEmbeddedUSBArbitrator-force-usbdevice=1", 0x270 - strlen(xargs_cmd) - 1);
 #ifdef TUI
 		if (tui_is_jailbreaking) {
 			tui_jailbreak_stage = 6;