remove unused tsaoptions

Author: Steve Lee (POWERSHELL HE/HIM) (from Dev Box)

.pipelines/DSC-Official.yml

@@ -161,7 +161,6 @@ extends:
         dependsOn: CreateMsixBundle
         variables:
           ob_outputDirectory: '$(Build.ArtifactStagingDirectory)'
-          ob_sdl_tsa_configFile: '$(Build.SourcesDirectory)\DSC\.config\tsaoptions.json'
           ob_sdl_sbom_enabled: false
           ob_signing_setup_enabled: true
           ob_sdl_codeql_compiled_enabled: false