Remove need for tools/ directory

[eddiestudies]

setup.py depends on most dependencies but the conda install from tools/ resolves an issue taht pip requirements do not.

An example of a failed build:

https://dev.azure.com/responsibleai/interpret-text/_build/results?buildId=5720&view=logs&j=cac13d19-97dc-52d6-a58d-dbc7d5c3ddc1&t=ec6b3cec-d324-59f0-bb1a-6e83d32ca2c2