extmod/uasyncio: Fix syntax of generator functions.

The compiler is not picky right now, but these are actually all syntax
errors:
- await is only valid in an async function
- async functions that use yield are actually async generators (a construct
  not supported by the compiler right now)

1 files changed, 2 insertions, 1 deletions

diff --git a/extmod/uasyncio/event.py b/extmod/uasyncio/event.py
index 3b5e79d8f..1525bcf3a 100644
--- a/extmod/uasyncio/event.py
+++ b/extmod/uasyncio/event.py
@@ -23,7 +23,8 @@ class Event:
     def clear(self):
         self.state = False
 
-    async def wait(self):
+    # async
+    def wait(self):
         if not self.state:
             # Event not set, put the calling task on the event's waiting queue
             self.waiting.push(core.cur_task)