Clean up warnings suppression list (dask#8505)

Author: crusaderky

pyproject.toml

@@ -143,9 +143,7 @@ filterwarnings = [
     '''ignore:setDaemon\(\) is deprecated, set the daemon attribute instead:DeprecationWarning:paramiko''',
     '''ignore:`np.bool8` is a deprecated alias for `np.bool_`''',
     '''ignore:is_sparse is deprecated and will:FutureWarning''',
-    # Need bokeh >= 3.3 for https://github.com/bokeh/bokeh/pull/13147
-    '''ignore:datetime\.datetime\.utc(fromtimestamp|now)\(\) is deprecated and scheduled for removal in a future version.*:DeprecationWarning:bokeh''',
-    # https://github.com/tornadoweb/tornado/issues/3334
+    # Need Tornado >=6.4
     '''ignore:datetime\.datetime\.utc(fromtimestamp|now)\(\) is deprecated and scheduled for removal in a future version.*:DeprecationWarning:tornado''',
     # https://github.com/dateutil/dateutil/issues/1284
     '''ignore:datetime\.datetime\.utc(fromtimestamp|now)\(\) is deprecated and scheduled for removal in a future version.*:DeprecationWarning:dateutil''',