message: Disable eager nested defuns on TPU test
  Also delete test for variable deletion as it is super slow
  on some backends.
diff: @@ -177,17 +177,6 @@ class EagerTest(xla_test.XLATestCase):
  for _ in range(100):
  values.append(var.value())
  - def testVariablesAreDeleted(self):
  - # This test makes sure that we release device (especially TPU) memory
  - # when resource variable is deleted.
  - with self.test_scope():
  - # Create and destroy a 128MB variable 100 times.
  - # If we don't release device memory when python variable is deleted,
  - # this will eat over 13GB and OOM.
  - for _ in range(100):
  - # Create 128MiB variables
  - resource_variable_ops.ResourceVariable(array_ops.ones([32, 1024, 1024]))
  -
  # The shape, shape_n, size, and rank are tested here because their
  # execution kernels (as opposed to compilation only tf2xla kernels)
  # are distincts from tf2xla kernels.
  @@ -430,6 +419,7 @@ class EagerFunctionTest(xla_test.XLATestCase):
  self.assertAllEqual((2, 3, 4), dz.shape.as_list())
  def testNestedDefun(self):
  + self.skipTest('Nested defuns do not work on TPU at the moment')
  with self.test_scope():
  @function.defun
  