usb: remove msos-descriptor feature.

examples/stm32l5/src/bin/usb_ethernet.rs

@@ -82,6 +82,7 @@ async fn main(spawner: Spawner) {
         &mut make_static!([0; 256])[..],
         &mut make_static!([0; 256])[..],
         &mut make_static!([0; 256])[..],
+        &mut [], // no msos descriptors
         &mut make_static!([0; 128])[..],
     );
 

examples/stm32l5/src/bin/usb_hid_mouse.rs

@@ -62,6 +62,7 @@ async fn main(_spawner: Spawner) {
         &mut device_descriptor,
         &mut config_descriptor,
         &mut bos_descriptor,
+        &mut [], // no msos descriptors
         &mut control_buf,
     );
 

examples/stm32l5/src/bin/usb_serial.rs

@@ -57,6 +57,7 @@ async fn main(_spawner: Spawner) {
         &mut device_descriptor,
         &mut config_descriptor,
         &mut bos_descriptor,
+        &mut [], // no msos descriptors
         &mut control_buf,
     );