feat: remove unused code and change ToolUsageStarted event place

src/crewai/tools/tool_usage.py

@@ -2,7 +2,7 @@ import ast
 import datetime
 import json
 import time
-from dataclasses import dataclass
+
 from difflib import SequenceMatcher
 from json import JSONDecodeError
 from textwrap import dedent
@@ -23,6 +23,7 @@ from crewai.utilities.agent_utils import (
 )
 from crewai.utilities.events.crewai_event_bus import crewai_event_bus
 from crewai.utilities.events.tool_usage_events import (
+    ToolUsageStartedEvent,
     ToolSelectionErrorEvent,
     ToolUsageErrorEvent,
     ToolUsageFinishedEvent,
@@ -148,7 +149,7 @@ class ToolUsage:
         tool_string: str,
         tool: CrewStructuredTool,
         calling: Union[ToolCalling, InstructorToolCalling],
-    ) -> str:
+    ) -> str:        
         if self._check_tool_repeated_usage(calling=calling):  # type: ignore # _check_tool_repeated_usage of "ToolUsage" does not return a value (it only ever returns None)
             try:
                 result = self._i18n.errors("task_repeated_usage").format(
@@ -166,6 +167,26 @@ class ToolUsage:
                 if self.task:
                     self.task.increment_tools_errors()
 
+        if self.agent:
+            event_data = {
+                "agent_key": self.agent.key if self.agent else None,
+                "agent_role": self.agent.role if self.agent else None,
+                "tool_name": self.action.tool,
+                "tool_args": self.action.tool_input,
+                "tool_class": self.action.tool,
+                "agent": self.agent,
+            }
+
+            if self.agent.fingerprint:
+                event_data.update(self.agent.fingerprint)
+
+            crewai_event_bus.emit(
+                self,
+                ToolUsageStartedEvent(
+                   **event_data 
+                ),
+            )
+            
         started_at = time.time()
         from_cache = False
         result = None  # type: ignore