Remove note about tb-nightly for mesh (#27146)

Summary:
The mesh plugin is now supported by default TensorBoard install, so removing this comment.

cc sanekmelnikov lanpa natalialunova
Pull Request resolved: https://github.com/pytorch/pytorch/pull/27146

Differential Revision: D17717610

Pulled By: orionr

fbshipit-source-id: 516efad5b800f7261b1dc6728e798c830d88b6ca
diff --git a/torch/utils/tensorboard/writer.py b/torch/utils/tensorboard/writer.py
index 1ce10fe..8d30658 100644
--- a/torch/utils/tensorboard/writer.py
+++ b/torch/utils/tensorboard/writer.py
@@ -899,7 +899,7 @@
         so it allows users to interact with the rendered object. Besides the basic definitions
         such as vertices, faces, users can further provide camera parameter, lighting condition, etc.
         Please check https://threejs.org/docs/index.html#manual/en/introduction/Creating-a-scene for
-        advanced usage. Note that currently this depends on tb-nightly to show.
+        advanced usage.
 
         Args:
             tag (string): Data identifier