Duplicating values as individual attributes and as part of a dictionary (_values). Choose one.

[jmframe]

Short description explaining the high-level reason for the new issue.

Current behavior

Storing values as individual attributes of the BMI model:
self.total_precipitation or self.atmosphere_water__liquid_equivalent_precipitation_rate
And as part of a dictionary:
self.all_lstm_input_values_dict['atmosphere_water__liquid_equivalent_precipitation_rate']

Expected behavior

Just store the value in one place or another.
Also, we don't need the dictionary all_lstm_input_values_dict, we'll just include everything in _values