Update event context extractor description + clean up log

Author: NathanielRN

python/src/otel/otel_sdk/opentelemetry/instrumentation/aws_lambda/__init__.py

@@ -86,8 +86,8 @@ def _instrument(self, **kwargs):
             **kwargs: Optional arguments
                 ``tracer_provider``: a TracerProvider, defaults to global
                 ``event_context_extractor``: a method which takes the Lambda
-                    Event as input and provides the object which contains the
-                    context as output (usually HTTP headers)
+                    Event as input and extracts an OTel Context from it. Usually
+                    the the context is extract from HTTP headers on the event.
         """
         tracer = get_tracer(
             __name__, __version__, kwargs.get("tracer_provider")
@@ -174,10 +174,6 @@ def _determine_parent_context(lambda_event: Any) -> Context:
         ):
             return parent_context
 
-        logger.debug(
-            "X-Ray propagation failed, using user-configured propagators to extract context from Lambda Event."
-        )
-
         if event_context_extractor:
             parent_context = event_context_extractor(lambda_event)
         else: