Fix lint errors: Remove unused variable and fix whitespace

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

src/crewai/events/event_listener.py

@@ -378,11 +378,8 @@ class EventListener(BaseEventListener):
         @crewai_event_bus.on(LLMStreamChunkEvent)
         def on_llm_stream_chunk(source, event: LLMStreamChunkEvent):
             self.text_stream.write(event.chunk)
-
             self.text_stream.seek(self.next_chunk)
-
-            # Read from the in-memory stream
-            content = self.text_stream.read()
+            self.text_stream.read()
             self.next_chunk = self.text_stream.tell()
 
         # ----------- LLM GUARDRAIL EVENTS -----------

tests/utilities/test_events.py

@@ -7,10 +7,8 @@ from pydantic import Field
 from crewai.agent import Agent
 from crewai.agents.crew_agent_executor import CrewAgentExecutor
 from crewai.crew import Crew
-from crewai.flow.flow import Flow, listen, start
-from crewai.llm import LLM
-from crewai.task import Task
-from crewai.tools.base_tool import BaseTool
+from crewai.events.event_bus import crewai_event_bus
+from crewai.events.event_listener import EventListener
 from crewai.events.types.agent_events import (
     AgentExecutionCompletedEvent,
     AgentExecutionErrorEvent,
@@ -24,9 +22,6 @@ from crewai.events.types.crew_events import (
     CrewTestResultEvent,
     CrewTestStartedEvent,
 )
-from crewai.events.event_bus import crewai_event_bus
-from crewai.events.event_listener import EventListener
-from crewai.events.types.tool_usage_events import ToolUsageFinishedEvent
 from crewai.events.types.flow_events import (
     FlowCreatedEvent,
     FlowFinishedEvent,
@@ -47,7 +42,12 @@ from crewai.events.types.task_events import (
 )
 from crewai.events.types.tool_usage_events import (
     ToolUsageErrorEvent,
+    ToolUsageFinishedEvent,
 )
+from crewai.flow.flow import Flow, listen, start
+from crewai.llm import LLM
+from crewai.task import Task
+from crewai.tools.base_tool import BaseTool
 
 
 @pytest.fixture(scope="module")
@@ -994,7 +994,7 @@ def test_llm_emits_event_with_lite_agent():
 
 def test_llm_stream_chunks_do_not_print_to_stdout(capsys):
     """Test that LLM streaming chunks are not printed to stdout.
-    
+
     This test verifies the fix for issue #3715 where LLM stream chunks
     were being printed directly to stdout via print() statement.
     """
@@ -1008,7 +1008,7 @@ def test_llm_stream_chunks_do_not_print_to_stdout(capsys):
 
         # Manually emit stream chunk events to simulate streaming
         llm = LLM(model="gpt-4o", stream=True)
-        
+
         test_chunks = ["Hello", " ", "world", "!"]
         for chunk in test_chunks:
             crewai_event_bus.emit(llm, event=LLMStreamChunkEvent(chunk=chunk))