ci: unset rust envs

Author: lrubasze

.github/workflows/zombienet_substrate.yml

@@ -57,8 +57,6 @@ jobs:
       ZOMBIENET_INTEGRATION_TEST_IMAGE: "${{ needs.preflight.outputs.TEMP_IMAGES_BASE }}/polkadot-debug:${{ needs.preflight.outputs.DOCKER_IMAGES_VERSION }}"
       DEBUG: ${{ needs.preflight.outputs.DEBUG }}
       ZOMBIENET_PROVIDER: ${{ needs.preflight.outputs.ZOMBIENET_PROVIDER }}
-      RUST_LOG: ${{ needs.preflight.outputs.RUST_LOG }}
-      ZOMBIE_PROVIDER: ${{ needs.preflight.outputs.ZOMBIE_PROVIDER }}
 
     strategy:
       fail-fast: false