refactor: streamline tracing condition checks and clean up deprecated warnings (#3358)

This commit simplifies the conditions for enabling tracing in both the Crew and Flow classes by removing the redundant call to `on_first_execution_tracing_confirmation()`. Additionally, it removes deprecated warning filters related to Pydantic in the KnowledgeStorage and RAGStorage classes, improving code clarity and maintainability.

src/crewai/flow/flow.py

@@ -40,7 +40,6 @@ from crewai.utilities.events.listeners.tracing.trace_listener import (
 )
 from crewai.utilities.events.listeners.tracing.utils import (
     is_tracing_enabled,
-    on_first_execution_tracing_confirmation,
 )
 from crewai.utilities.printer import Printer
 
@@ -479,11 +478,7 @@ class Flow(Generic[T], metaclass=FlowMeta):
         # Initialize state with initial values
         self._state = self._create_initial_state()
         self.tracing = tracing
-        if (
-            on_first_execution_tracing_confirmation()
-            or is_tracing_enabled()
-            or self.tracing
-        ):
+        if is_tracing_enabled() or self.tracing:
             trace_listener = TraceCollectionListener()
             trace_listener.setup_listeners(crewai_event_bus)
         # Apply any additional kwargs