GAWB-3349: Remove compute scopes from FC

[irosenbe]

Description:
As a user of FireCloud and Saturn, I should be able to use either platform without needing to be granted advanced scopes (specifically for this ticket, Google Compute Engine).

Verily analysts supporting BVDP and AMP-PD driver projects cannot make use of this system unless this is done.

Implementation Notes:
I have heard multiple times now that "we have never needed the compute scope" for end users. In theory, then, this ticket is as simple as removing our oauth request for this scope. However, please make sure to test thoroughly to ensure no regressions.

This scope needs to be removed from two places:

1. The UI's oauth request at https://github.com/broadinstitute/firecloud-ui/blob/develop/src/cljs/main/broadfcui/auth.cljs#L29
2. The API's oauth request in swagger-ui, found in multiple locations in https://github.com/broadinstitute/firecloud-orchestration/blob/develop/src/main/resources/swagger/api-docs.yaml

Link to GAWB ticket: https://broadinstitute.atlassian.net/browse/GAWB-3349