To remove the search field in Magento 2, you can follow these steps:
Login to the Magento 2 Admin Panel.
Navigate to the Content > Configuration section.
Click on the Edit button for the theme you want to edit.
Expand the Header section.
Find the Show Search Field option and set it to No.
Save the configuration by clicking on the Save Configuration button.
Once you have completed these steps, the search field should no longer appear on the front-end of your Magento 2 website.
Note that the exact location of the Show Search Field option may vary depending on your theme, but it should be located somewhere in the Header section of the configuration.
