FIX(pgweb): pgweb namespace duplication

- Remove namespace definition from deployment.yaml
- Namespace now only defined in namespace.yaml
- Fixes ComparisonError: may not add resource with already registered id

pgweb/deployment.yaml

@@ -1,9 +1,3 @@
----
-apiVersion: v1
-kind: Namespace
-metadata:
-  name: pgweb
----
 apiVersion: apps/v1
 kind: Deployment
 metadata: