Fix release pipeline trigger

I actually wanted this repo disabled, triggered by PSES instead.

Author: andyleejordan

.vsts-ci/azure-pipelines-release.yml

@@ -6,10 +6,7 @@ variables:
   - name: DOTNET_CLI_TELEMETRY_OPTOUT
     value: 'true'
 
-trigger:
-  branches:
-    include:
-      - release/*
+trigger: none
 
 resources:
   repositories: