use correct image (microsoft#2352)

Author: tian-lt

build/pipelines/templates/build-single-architecture.yaml

@@ -2,7 +2,6 @@
 
 parameters:
   isReleaseBuild: false
-  isOSSBuild: false
   useReleaseAppxManifest: false
   platform: ''
   condition: ''
@@ -42,10 +41,6 @@ jobs:
   - checkout: self
     fetchDepth: 1
 
-  - ${{ if eq(parameters.isOSSBuild, true) }}:
-    - task: nuget-security-analysis@0
-      displayName: Secure Supply Chain Analysis
-
   - ${{ if eq(parameters.isReleaseBuild, true) }}:
     - task: UniversalPackages@0
       displayName: Download internals package

build/pipelines/templates/run-ui-tests.yaml

@@ -1,7 +1,6 @@
 # This template contains jobs to run UI tests using WinAppDriver.
 
 parameters:
-  isOSSBuild: false
   platform: ''
   runsettingsFileName: ''
 
@@ -11,10 +10,8 @@ jobs:
   dependsOn: Build${{ parameters.platform }}
   condition: succeeded()
   pool:
-    ${{ if eq(parameters.isOSSBuild, true) }}:
-      name: EssentialExperiencesOpenSource-Win11
-    ${{ if eq(parameters.isOSSBuild, false) }}:
-      name: EssentialExperiences-Win11
+    name: EssentialExperiences-Win11
+    image: Win11Enterprise-BuildTools2022
   variables:
     skipComponentGovernanceDetection: true
     DropName: drop-${{ parameters.platform }}