shared/tinyusb: Remove macro guard for tx_overwritabe_if_not_connected.

It's now available in the version of TinyUSB used by this repository.

Also, update to the newer `tud_cdc_configure_t` struct name and newer
`tud_cdc_configure()` function name.

Signed-off-by: Damien George <damien@micropython.org>

Author: dpgeorge

shared/tinyusb/mp_usbd.h

@@ -61,19 +61,12 @@
 static inline void mp_usbd_init_tud(void) {
     tusb_init();
     #if MICROPY_HW_USB_CDC
-    tud_cdc_configure_fifo_t cfg = { .rx_persistent = 0,
-                                     .tx_persistent = 1,
-
-                                     // This config flag is unreleased in TinyUSB >v0.18.0
-                                     // but included in Espressif's TinyUSB component since v0.18.0~3
-                                     //
-                                     // Versioning issue reported as
-                                     // https://github.com/espressif/esp-usb/issues/236
-                                     #if TUSB_VERSION_NUMBER > 1800 || defined(ESP_PLATFORM)
-                                     .tx_overwritabe_if_not_connected = 1,
-                                     #endif
+    tud_cdc_configure_t cfg = {
+        .rx_persistent = 0,
+        .tx_persistent = 1,
+        .tx_overwritabe_if_not_connected = 1,
     };
-    tud_cdc_configure_fifo(&cfg);
+    tud_cdc_configure(&cfg);
     #endif
 }