Revert "add tracing to library client (#591)"

This reverts commit bc1fddf1df.

llama_stack/providers/inline/telemetry/meta_reference/sqlite_span_processor.py

@@ -20,7 +20,6 @@ class SQLiteSpanProcessor(SpanProcessor):
         """Initialize the SQLite span processor with a connection string."""
         self.conn_string = conn_string
         self.ttl_days = ttl_days
-        self._shutdown_event = threading.Event()
         self.cleanup_task = None
         self._thread_local = threading.local()
         self._connections: Dict[int, sqlite3.Connection] = {}
@@ -145,10 +144,9 @@ class SQLiteSpanProcessor(SpanProcessor):
         """Run cleanup periodically."""
         import time
 
-        while not self._shutdown_event.is_set():
+        while True:
             time.sleep(3600)  # Sleep for 1 hour
-            if not self._shutdown_event.is_set():
-                self._cleanup_old_data()
+            self._cleanup_old_data()
 
     def on_start(self, span: Span, parent_context=None):
         """Called when a span starts."""
@@ -233,23 +231,11 @@ class SQLiteSpanProcessor(SpanProcessor):
 
     def shutdown(self):
         """Cleanup any resources."""
-        self._shutdown_event.set()
-
-        # Wait for cleanup thread to finish if it exists
-        if self.cleanup_task and self.cleanup_task.is_alive():
-            self.cleanup_task.join(timeout=5.0)
-        current_thread_id = threading.get_ident()
-
         with self._lock:
-            # Close all connections from the current thread
-            for thread_id, conn in list(self._connections.items()):
-                if thread_id == current_thread_id:
-                    try:
-                        if conn:
-                            conn.close()
-                        del self._connections[thread_id]
-                    except sqlite3.Error:
-                        pass  # Ignore errors during shutdown
+            for conn in self._connections.values():
+                if conn:
+                    conn.close()
+            self._connections.clear()
 
     def force_flush(self, timeout_millis=30000):
         """Force export of spans."""