Excel Text Deduplication Cleanup

I have between three and five Excel sheets filled with text-only entries that need a straightforward cleanup: every duplicate row must go. No reformatting, no case-standardisation—just accurate deduplication while preserving the original column structure and any unique records exactly as they are.

Please work directly in Excel (XLSX) or Google Sheets if you prefer, but be sure the final delivery arrives as XLSX files, one per sheet, with a brief note summarising how many duplicates were found and removed from each.