sidecar: Remove old phrase in non-goals
sidecar: Remove old phrase in non-goals

This was requested by Sergey here:
	https://github.com/kubernetes/enhancements/pull/1913#discussion_r482207970

Signed-off-by: Rodrigo Campos <6dfa9cecb562e345739f2e4eb69e9ebd0fbff687@kinvolk.io>

kubernetes/enhancements,kubernetes/enhancements,kubernetes/enhancements