Do we need to pass `resource_url_template` into workspaces?
## Description In the Web IDE Engineering Sync, we were enlightened to the possibility that workspaces does not require the `resource_url_template` part of the extension marketplace settings. This is because VSCode only needs this in the web (non-server backed) environment in order to pull specific files down. ## Acceptance Criteria - [ ] Do we need this or not? If not, remove it!
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