remove unnecessary awaits on telem decorator (#1095)

* add missing awaits

* remove extra coroutine

Author: dtam

guardrails/hub_telemetry/hub_tracing.py

@@ -3,6 +3,7 @@
     Any,
     Dict,
     Optional,
+    AsyncGenerator,
 )
 
 from opentelemetry.trace import Span
@@ -224,7 +225,7 @@ def wrapper(*args, **kwargs):
     return decorator
 
 
-async def _run_async_gen(fn, *args, **kwargs):
+async def _run_async_gen(fn, *args, **kwargs) -> AsyncGenerator[Any, None]:
     gen = fn(*args, **kwargs)
     async for item in gen:
         yield item
@@ -238,7 +239,7 @@ def async_trace_stream(
 ):
     def decorator(fn):
         @wraps(fn)
-        async def wrapper(*args, **kwargs):
+        def wrapper(*args, **kwargs):
             hub_telemetry = HubTelemetry()
             if hub_telemetry._enabled and hub_telemetry._tracer is not None:
                 with hub_telemetry._tracer.start_span(