Update Preferences without asterisk (*) masked email

Hello on user preferences page;
I don’t want to enforce user to enter email and not display as asterisk () masked email
like this c

in file subscribelib2.php
i put value="%s" on line around 822

<td class="attributeinput"><input type=text name=email required="required" value="%s" placeholder="Please enter your Email here" size="40" id="email" />

it get the email right but still asterisk (*) masked is on …

can you help me to get email as plain text without any asterisk *****

or even tell me the javascript file that do that so i disable from loading

I do not need to do asterisk ***** on all my phplist

Many Thanks