Removed the Diagnostic Logs Audit requirement for EventGrid/eventSubscriptions (Azure#390)

* Removed Diagnostic logging auditing for EventGrid/eventSubscriptions from the PBMM and Log Analytics policy initiatives.

Author: tredell

policy/builtin/assignments/pbmm.bicep

@@ -84,7 +84,7 @@ resource policySetAssignment 'Microsoft.Authorization/policyAssignments@2020-03-
           'Microsoft.DataFactory/factories'
           'Microsoft.DataLakeAnalytics/accounts'
           'Microsoft.DataLakeStore/accounts'
-          'Microsoft.EventGrid/eventSubscriptions'
+          // 'Microsoft.EventGrid/eventSubscriptions' # Removed since it doesn't have any logs
           'Microsoft.EventGrid/topics'
           'Microsoft.EventHub/namespaces'
           'Microsoft.Network/expressRouteCircuits'

policy/custom/definitions/policyset/LogAnalytics.bicep

@@ -56,7 +56,7 @@ resource policyset_name 'Microsoft.Authorization/policySetDefinitions@2020-03-01
           'Microsoft.DataLakeAnalytics/accounts'
           'Microsoft.DataLakeStore/accounts'
           'Microsoft.EventGrid/systemTopics'
-          'Microsoft.EventGrid/eventSubscriptions'
+          //'Microsoft.EventGrid/eventSubscriptions' # Removed since it doesn't have any logs
           'Microsoft.EventGrid/topics'
           'Microsoft.EventHub/namespaces'
           'Microsoft.Network/expressRouteCircuits'