We don't want to publish Tests package, but we should include it in the signing before deleting it, otherwise an error

Author: Andrei Borodin

pipelines/ci-release.yml

@@ -82,14 +82,14 @@ jobs:
         version: '$(MRTKVersion)-$(MRTKReleaseTag)'
         packDestination: '$(Build.SourcesDirectory)\artifacts\release'        
 
-  - powershell: |
-      Remove-Item "$(Build.SourcesDirectory)/artifacts/release/Microsoft.MixedReality.Toolkit.Tests.*"
-    displayName: "Delete MixedReality.Toolkit.Tests package from the release artifacts"
-
   - template: templates/tasks/signing.yml
     parameters:
       ConfigName: "$(Build.ArtifactStagingDirectory)/configs/MRTKNuGetSignConfig.xml"
 
+  - powershell: |
+      Remove-Item "$(Build.SourcesDirectory)/artifacts/release/Microsoft.MixedReality.Toolkit.Tests.*"
+    displayName: "Delete MixedReality.Toolkit.Tests package from the release artifacts"
+
   - task: PublishBuildArtifacts@1
     displayName: 'Publish Packages'
     inputs: