As brought up in this post, it seems "Columns escaped with" is a required field during CSV import. We should allow the user to leave this field blank if they desire.
An additional comment by Marc:
Avoiding the handling of $cfg['Import']['csv_escaped'] would require a
change of logic in libraries/plugins/import/ImportCsv.class.php.
Should be fixed with https://github.com/phpmyadmin/phpmyadmin/commit/679015ea5250ff6eebd4c97f5e17a6a864781f0a