ConfigProto disappeared in tf 2.0, so an elegant solution is:
import tensorflow as tf
and then replace:
tf.ConfigProto by tf.compat.v1.ConfigProto
In fact, the compatibility built in 2.0 to get tf 1.XX: tf.compat.v1 is really helpful.
Useful link:
Migrate your tensorflow 1. code to tensorflow 2.:
https://www.tensorflow.org/guide/migrate