"Fix" an issue with pytype timeouts (#7000)

The TensorBoard python codebase does not have any type checking.
Apparently this has lead to issues with the typechecker internally the
"fix" for this is to simply skip the file.

Googlers see b/419318203

Author: rileyajones

tensorboard/compat/tensorflow_stub/tensor_shape.py

@@ -14,6 +14,8 @@
 # ==============================================================================
 """Helper classes for tensor shape inference."""
 
+# pytype: skip-file
+
 from . import compat, dtypes
 from tensorboard.compat.proto import tensor_shape_pb2