Fix CI failures: remove unused imports and add streaming parameters to agent adapters and test mocks

Co-Authored-By: João <joao@crewai.com>

tests/test_streaming_comprehensive.py

@@ -211,7 +211,6 @@ def test_llm_stream_chunk_to_crew_stream_chunk():
         
         llm_event = LLMStreamChunkEvent(chunk="test chunk")
         
-        from crewai.utilities.events.crewai_event_bus import crewai_event_bus
         crewai_event_bus.emit(mock_source, llm_event)
         
         assert len(received_crew_chunks) == 1
@@ -230,6 +229,7 @@ def test_multiple_agents_streaming():
     with patch('crewai.llm.LLM') as mock_llm_class:
         mock_llm = Mock()
         mock_llm.call.return_value = "Agent response"
+        mock_llm.supports_stop_words = True
         mock_llm_class.return_value = mock_llm
         
         agent1 = Agent(

tests/test_task_guardrails.py

@@ -119,7 +119,7 @@ def test_guardrail_error_in_context():
     # Mock execute_task to succeed on second attempt
     first_call = True
 
-    def execute_task(task, context, tools):
+    def execute_task(task, context, tools, stream=False, stream_callback=None):
         nonlocal first_call
         if first_call:
             first_call = False