fix(traces): remove superfluous prefixing (#86)

When we introduced a new shim base (deployment, daemonset), we did not
prefix them accordingly. #84 reintroduced the observe- prefix for the
resulting controllers, but inadvertently double-prefixed all resources
coming in from base/.

This PR fixes things by removing prefixing from base/kustomization.yaml.
You can't build a usable traces stack without one of daemonset or
deployment, so gate things on either of those layers.

bases/traces/base/kustomization.yaml

@@ -1,6 +1,4 @@
 ---
-namePrefix: observe-
-
 resources:
   - clusterrole.yaml
   - clusterrolebinding.yaml