W3speedster Customize Critical Css

Function:	w3SpeedsterCustomizeCriticalCss
Description:	If you wish to make any changes in Critical CSS, W3Speedster allows you to make changes in generated Critical CSS. For instance if you want to replace/ remove any string/URL from critical CSS (like @font-face { font-family:”Courgette”; to @font-face { )
Parameter:	$critical_css- Critical Css of the page.
Return:	$critical_css – Reflect the changes made in critical css.

function w3SpeedsterCustomizeCriticalCss($critical_css){
$critical_css = str_replace('@font-face { font-family:"Courgette";', ' ',$critical_css);
	return $critical_css;
}

function w3SpeedsterCustomizeCriticalCss($critical_css){
$critical_css = str_replace('@font-face { font-family:"Courgette";', ' ',$critical_css);
	return $critical_css;
}