Revert "(v1.4.1 hotfix) Fix multi-arch container image scanning (#136)"

This reverts commit 84aa760.

Author: bluesentinelsec

.github/workflows/test_multi_arch_images.yml

@@ -162,7 +162,6 @@ runs:
     - --thresholds
     - ${{ inputs.threshold_fixable_only == 'true' && '--threshold-fixable-only' || '--no-op' }}
     - ${{ inputs.show_only_fixable_vulns == 'true' && '--show-only-fixable-vulns'|| '--no-op' }}
-    - --platform=${{ inputs.platform || '' }}
     - --critical=${{ inputs.critical_threshold }}
     - --high=${{ inputs.high_threshold }}
     - --medium=${{ inputs.medium_threshold }}