revert c4686aafc4

revert feat(api): add plug_in_detection

src/types/usb_device.rs

@@ -98,10 +98,7 @@ impl<const L: usize> UsbDevice<L> {
         UsbBusAllocator::new(self)
     }
 
-    #[inline(always)]
-    pub fn plug_in_detect(&self, cs: CriticalSection<'_>) -> bool {
-        self.usb.borrow(cs).usbsta.read().vbus().bit_is_set()
-    }
+    #[inline]
 
     #[inline(always)]
     pub(crate) fn allocated_endpoints(&self) -> impl Iterator<Item = (usize, &USBEndpoint)> {