code: def test_simple_case_without_scale(self):
      layer = rms_norm.RMSNorm(axis=[1, 2], eps=0.0, create_scale=False)
      inputs = np.full(shape=[2, 3, 3, 5], fill_value=2.0)
      _ = layer(inputs)
      assert "scale" not in layer.params_dict()
  
imports: from absl.testing import absltest
  from absl.testing import parameterized
  from haiku._src import initializers
  from haiku._src import rms_norm
  from haiku._src import test_utils
  from haiku._src import transform
  import jax
  import jax.numpy
  import numpy
label_desc: Use image node_id 8 for calling the RMSNormTest obj's underlying member method code with example usage: obj.test_simple_case_without_scale() without return types