regex101: Comments in XML document

Regular Expression

<!--((.[\r\n])|(.))*?-->

<?xml version="1.0" encoding="utf-8"?>

<!-- use empty string to specify no proxy or port -->
<!-- This version must agree with that in apps/common/res/apns.xml -->

<foo bar="2"></foo>
<apns version="8">
    <apn carrier="MetroPCS"
         mcc="310"
         mnc="00"
         apn="internet"
         user="*"
         server="*"
         password="*"
         mmsc="http://mms.metropcs.net:3128/mmsc"
         auth="NONE"
    />
    <apn carrier="T-Mobile US"
         mcc="310"
         mnc="260"
         apn="fast.t-mobile.com"
         user="none"
         server="*"
         password="none"
         auth = "NONE"
         mmsc="http://mms.msg.eng.t-mobile.com/mms/wapenc"
         mtusize="1440"
         protocol="IPV4V6"
    />

    <!-- BEGIN Motorola, a18030, IKMAINJB-3710 Update the APNs to match the Vanquish U Canada & Qinara shipping -->
    <apn carrier="AT&amp;T PTA"
        mcc="310"
        mnc="410"
        apn="pta"
        user=""
        password=""
        auth = "NONE"