Remove unneccessary MeasurableVariable registration

Author: ricardoV94

pymc/distributions/truncated.py

@@ -37,7 +37,7 @@
 from pymc.distributions.shape_utils import _change_dist_size, change_dist_size, to_tuple
 from pymc.distributions.transforms import _default_transform
 from pymc.exceptions import TruncationError
-from pymc.logprob.abstract import MeasurableVariable, _logcdf, _logprob
+from pymc.logprob.abstract import _logcdf, _logprob
 from pymc.logprob.basic import icdf, logcdf
 from pymc.math import logdiffexp
 from pymc.util import check_dist_not_registered
@@ -64,9 +64,6 @@ def update(self, node: Node):
         return {node.inputs[-1]: node.outputs[0]}
 
 
-MeasurableVariable.register(TruncatedRV)
-
-
 @singledispatch
 def _truncated(op: Op, lower, upper, size, *params):
     """Return the truncated equivalent of another `RandomVariable`."""