Remove unnecessary empty env fields from pgadmin.yml

Co-authored-by: SRF-Audio <16975040+SRF-Audio@users.noreply.github.com>

Author: Copilot

argocd/apps/platform/pgadmin.yml

@@ -14,10 +14,6 @@ spec:
     targetRevision: 1.50.0
     helm:
       valuesObject:
-        env:
-          email: ""
-          password: ""
-        
         envVarsFromSecrets:
           - pgadmin-credentials