Fix telemetry-steps.yml (#4903)

Fix bug in telemetry-steps.yml that causes telemetry setup to be disabled even if TELEMETRYGUID is set.

tools/ci_build/github/azure-pipelines/templates/telemetry-steps.yml

@@ -2,27 +2,18 @@
 # variable
 
 steps:
-  - ${{ if ne(variables.TELEMETRYGUID, '') }}:
-    - task: PythonScript@0
-      displayName: 'Set TelemetryOption variable [telemetry enabled]'
-      inputs:
-        scriptSource: inline
-        script: |
-          print("##vso[task.setvariable variable=TelemetryOption]--use_telemetry")
-
-    - powershell: |
+  - powershell: |
+      if ($env:TELEMETRYGUID) {
         $length = $env:TELEMETRYGUID.length
         $fileContent = "#define TraceLoggingOptionMicrosoftTelemetry() \
           TraceLoggingOptionGroup("+$env:TELEMETRYGUID.substring(1, $length-2)+")"
         New-Item -Path "$(Build.SourcesDirectory)\include\onnxruntime\core\platform\windows\TraceLoggingConfigPrivate.h" -ItemType "file" -Value "$fileContent" -Force
-      displayName: 'Create TraceLoggingConfigPrivate.h For WinML Telemetry'
-      env:
-        TELEMETRYGUID: $(TELEMETRYGUID)
-
-  - ${{ if eq(variables.TELEMETRYGUID, '') }}:
-    - task: PythonScript@0
-      displayName: 'Set TelemetryOption variable [telemetry disabled]'
-      inputs:
-        scriptSource: inline
-        script: |
-          print("##vso[task.setvariable variable=TelemetryOption]")
+        Write-Host "##vso[task.setvariable variable=TelemetryOption]--use_telemetry"
+        Write-Host "Telemetry is enabled."
+      } else {
+        Write-Host "##vso[task.setvariable variable=TelemetryOption]"
+        Write-Host "Telemetry is disabled."
+      }
+    displayName: 'Set TelemetryOption variable and optionally create TraceLoggingConfigPrivate.h for WinML Telemetry'
+    env:
+      TELEMETRYGUID: $(TELEMETRYGUID)