Update setup.py

[Extpilot]

Remove pip.req dependency for install until either feature is implemented or remove if no longer necessary

[max-arnold]

@ceralena Could you please react in any way? This issue breaks the package installation process.

[roncanepa]

@ceralena Can we get this merged in please? Or else any necessary corrections proposed?

[max-arnold]

@roncanepa You might want to check out this fork: https://github.com/nickgarber/flowstate_viz

It contains the setup.py fix, and also supports more types of dependencies.

[roncanepa]

@max-arnold Thank you, I'd been trying to find an alternate and will take a look.