Here's how to clear data validation rules from cells in Excel:

1. Select the cells: Choose the cell(s) that contain the data validation rules you want to remove. You can select a single cell, multiple cells, or an entire range.

2. Go to Data Validation: Navigate to the "Data" tab on the Excel ribbon. In the "Data Tools" group, click "Data Validation."

3. Clear All: In the "Settings" tab of the Data Validation window, click the button labeled "Clear All." This will remove any existing data validation rules from the selected cells.

4. Click OK: Confirm your choice by clicking "OK" to close the Data Validation window.

Following these steps will effectively remove any data validation rules from the chosen cells, allowing users to enter any type of data without restrictions previously set by the rules.