Pin Adafruit TinyUSB to <3.0.0 (older TinyUSB compatible with ESP32 core). Remove dcd_stubs.

src/dcd_stubs.c

@@ -1,31 +0,0 @@
-/*
- * Stub DCD functions required by Adafruit TinyUSB Library's usbd.c
- * but not provided by ESP32 Arduino core's older libarduino_tinyusb.a.
- * These are for ISO transfers / SOF interrupt only -- MIDI doesn't use them.
- */
-#include "tusb.h"
-
-//--------------------------------------------------------------------+
-// SOF (Start of Frame)
-//--------------------------------------------------------------------+
-void dcd_sof_enable(uint8_t rhport, bool enabled) {
-  (void)rhport;
-  (void)enabled;
-}
-
-//--------------------------------------------------------------------+
-// ISO (Isochronous)
-//--------------------------------------------------------------------+
-bool dcd_edpt_iso_alloc(uint8_t rhport, uint8_t dir, uint8_t ep_addr, uint16_t packet_size) {
-  (void)rhport;
-  (void)dir;
-  (void)ep_addr;
-  (void)packet_size;
-  return true;
-}
-
-bool dcd_edpt_iso_activate(uint8_t rhport, tusb_desc_endpoint_t const *p_endpoint_desc) {
-  (void)rhport;
-  (void)p_endpoint_desc;
-  return true;
-}