ref: Remove some get_event_loop calls (#4366)

Remove some get_event_loop calls

src/backend/tests/unit/events/test_event_manager.py

@@ -115,7 +115,7 @@ class TestEventManager:
         assert manager.events["on_test_event"].func.__name__ == "send_event"
 
     # Ensuring thread-safety when accessing the events dictionary
-    def test_thread_safety_accessing_events_dictionary(self):
+    async def test_thread_safety_accessing_events_dictionary(self):
         def mock_callback(event_type: str, data: LoggableType):
             pass
 
@@ -130,8 +130,7 @@ class TestEventManager:
         queue = asyncio.Queue()
         manager = EventManager(queue)
 
-        tasks = [register_events(manager), access_events(manager)]
-        asyncio.get_event_loop().run_until_complete(asyncio.gather(*tasks))
+        await asyncio.gather(register_events(manager), access_events(manager))
 
     # Checking the performance impact of frequent event registrations
     def test_performance_impact_frequent_registrations(self):

src/backend/tests/unit/schema/test_schema_message.py

@@ -2,19 +2,9 @@ from langchain_core.prompts.chat import ChatPromptTemplate
 from langflow.schema.message import Message
 
 
-async def test_message_async_prompt_serialization():
-    template = "Hello, {name}!"
-    message = await Message.from_template_and_variables(template, name="Langflow")
-    assert message.text == "Hello, Langflow!"
-
-    prompt = message.load_lc_prompt()
-    assert isinstance(prompt, ChatPromptTemplate)
-    assert prompt.messages[0].content == "Hello, Langflow!"
-
-
 def test_message_prompt_serialization():
     template = "Hello, {name}!"
-    message = Message.sync_from_template_and_variables(template, name="Langflow")
+    message = Message.from_template_and_variables(template, name="Langflow")
     assert message.text == "Hello, Langflow!"
 
     prompt = message.load_lc_prompt()