Remove deprecated field

Deprecated field `Deployment` (replaced with Deployment**s**) need to be removed after releasing and updating Radix CLI
[api/deployments/models/component_deployment.go](https://github.com/equinor/radix-api/pull/786/files/f3b53fec63c4179175808b4cf5fd093f4a116881#diff-6ac1b98f7b64ef1ed43243b00a792ed5cb738fb9c55a619cbcc80ae9b53c1293)