Remove dead code.

src/file_system_watcher.rs

     }
 }
 
-struct InotifyBuffer {
-    data: [u8; 1024],
-}
-
-impl AsMut<[u8]> for InotifyBuffer {
-    fn as_mut<'a>(&'a mut self) -> &'a mut [u8] {
-        &mut self.data
-    }
-}
-
-impl AsRef<[u8]> for InotifyBuffer {
-    fn as_ref<'a>(&'a self) -> &'a [u8] {
-        &self.data
-    }
-}
-
 #[derive(Debug)]
 enum StateChange {
     Pause,