Even after changing the input to password on line 305, I could still see the password if I Inspected Element on the input in the Value. So I ended up removing the php outputting of the password as well with a note to enter it each time when making changes. Like so:
<td><input name="smtp_pass" type="password" id="smtp_pass" value="" size="40" class="code" /> Enter Password For Every Change</td>Here's hoping the developer encrypts it in the database and stops displaying it on the page.