Remove comment stating log prob was untested

Author: han-ol

bayesflow/networks/point_inference_network.py

@@ -200,7 +200,6 @@ def sample(self, batch_shape: Shape, conditions: Tensor = None) -> dict[str, Ten
 
         return samples
 
-    # WIP: untested draft of log_prob method
     def log_prob(self, samples: Tensor, conditions: Tensor = None, **kwargs) -> dict[str, Tensor]:
         output = self.subnet(conditions)
         log_probs = {}