ci: removing unused variable

Author: harshilgajera-crest

.github/workflows/reusable-build-test-release.yml

@@ -1723,7 +1723,6 @@ jobs:
         modinput-type: [ "modinput_functional" ]
         vendor-version: ${{ fromJson(needs.meta.outputs.matrix_supportedModinputFunctionalVendors) }}
         marker: ${{ fromJson(inputs.marker) }}
-        python39: [false]
     container:
       image: ghcr.io/splunk/workflow-engine-base:2.0.3
     env: