Remove the single profile from docker compose

[benibr]

We'd like to seperate services as much as possible in the future therefore we drop the examples for single migrid-io container.

• removed explanation from docs
• removed profiles from all envs and compose files

[benibr]

@bjarke42 If you don't object, it'll be merged. Should not affect your running setup at all.

[benibr]

Resolves #16

[Bjarke42]

This should not affect anything we are using.

[benibr]

@jonasbardino please merge