Update generated numpy files

PiperOrigin-RevId: 471273585

tensorflow_probability/python/internal/backend/numpy/gen/tensor_shape.py

@@ -73,8 +73,6 @@ def tf_export(*args, **kwargs):
 import operator
 from typing import Optional, Sequence, Type
 
-import six
-
 # from tensorflow.core.framework import tensor_shape_pb2
 # from tensorflow.core.function import trace_type
 # from tensorflow.python import tf2
@@ -269,10 +267,10 @@ def __init__(self, value):
         # TODO(b/143206389): Remove once we fully migrate to 3.X.
         self._value = int(value.__index__())
       except AttributeError:
-        six.raise_from(
-            TypeError("Dimension value must be integer or None or have "
-                      "an __index__ method, got value '{0!r}' with type '{1!r}'"
-                      .format(value, type(value))), None)
+        raise TypeError(
+            "Dimension value must be integer or None or have "
+            "an __index__ method, got value '{0!r}' with type '{1!r}'".format(
+                value, type(value))) from None
       if self._value < 0:
         raise ValueError("Dimension %d must be >= 0" % self._value)
 
@@ -855,13 +853,11 @@ def __init__(self, dims):
           try:
             self._dims.append(as_dimension(d).value)
           except TypeError as e:
-            six.raise_from(
-                TypeError(
-                    "Failed to convert '{0!r}' to a shape: '{1!r}'"
-                    "could not be converted to a dimension. A shape should "
-                    "either be single dimension (e.g. 10), or an iterable of "
-                    "dimensions (e.g. [1, 10, None])."
-                    .format(dims, d)), e)
+            raise TypeError(
+                "Failed to convert '{0!r}' to a shape: '{1!r}'"
+                "could not be converted to a dimension. A shape should "
+                "either be single dimension (e.g. 10), or an iterable of "
+                "dimensions (e.g. [1, 10, None]).".format(dims, d)) from e
         self._dims = tuple(self._dims)
 
   @property