Remove Hikashop.css and inline style from php

-- HikaShop version -- : 4.0.1
-- Joomla version -- : 3.9
-- PHP version -- : 7.2
-- Browser(s) name and version -- : Firefox last version

hello, how are you ?
I use the Bootstrap framework !
Hikashop load the hikashop.css file by default
Can it be deleted? (Usually located in helper files)
{ component->com_hikashop->helper->helper.php line 2827
if(!$app->isAdmin()) {
$style = $configClass->get('css_style', '');
if(!empty($style)) {
// $doc->addStyleSheet(HIKASHOP_CSS.'style_'.$style.'.css?t='.@filemtime(HIKASHOP_MEDIA.'css'.DS.'style_'.$style.'.css'));
}
}

if($lang->isRTL()) {
// $doc->addStyleSheet(HIKASHOP_CSS.'rtl.css?v='.HIKASHOP_RESSOURCE_VERSION);
}
]
Is hikashop disrupted by removing it?
How to remove inline style completely (without using Css and Remove from hikashop Php files)
please help me to resolved problem
thanks
best regards