fix: Remove URI attribute from Endpoint sample (#478)
fix: Remove URI attribute from Endpoint sample (#478)

Remove the `endpoint.uri` attribute from `create_endpoint_sample.py`.

Resolves Buganizer [issue](http://b/189844848)

Fixes #189844848🦕

googleapis/python-aiplatform,googleapis/python-aiplatform,sasha-gitg/python-aiplatform,sasha-gitg/python-aiplatform