Azure Synapse Workspace PublicNetworkAccess Fix (Azure#17210)

Co-authored-by: Nikhil Kumar <[email protected]>

Author: 2 people

specification/synapse/resource-manager/Microsoft.Synapse/stable/2021-06-01/workspace.json

@@ -1299,11 +1299,7 @@
           "x-ms-enum": {
             "name": "WorkspacePublicNetworkAccess",
             "modelAsString": true
-          },
-          "x-ms-mutability": [
-            "create",
-            "read"
-          ]
+          }
         },
         "cspWorkspaceAdminProperties": {
           "description": "Initial workspace AAD admin properties for a CSP subscription",