Comment out dependency fetching in auto-setup activation scripts

[jennymahmoudi]

In a user research session, the participant accepted the suggested manifest changes after Flox detected a Go project. In this case, the user had to turn off the VPN and so when go tried to get the private dependencies, Flox wasn't able to activate the shell.

We might want to remove the line to get dependencies since it's not required for the go setup, and might cause unexpected issues like this.

[ysndr]

This issue should be more general then. At least the python hook is also doing a pip install (or equivalent).

[mkenigs]

For now let's comment out go get, pip install, npm i etc. We'll change if @jennymahmoudi changes her mind