How Can I Uninstall This "show price with tax and without" SQL Patch?

I have install this sql ( show price with tax and without), now i want to uninstall. Can anyone modify this sql ?

Code:

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UPDATE `configuration` SET `configuration_description` = 'Display prices with Tax?<br>
Display with tax excluded (false)<br>
Display with tax included (true)<br>
Display prices with both tax included and then excluded prices (inc/ex)<br>
Display prices with both tax excluded and then included (ex/inc)<br>
', set_function = 'zen_cfg_select_option(array(\'false\', \'true\', \'inc/ex\', \'ex/inc\'),', `configuration_value`='ex/inc'
WHERE `configuration_key` ='DISPLAY_PRICE_WITH_TAX';

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