Remove old code from account_page

After the new functionality of verify.php page was implemented (see
issue #20686), account_page is no longer included, and some old code can
be removed.

account_page.php

@@ -102,32 +102,18 @@
 # If the password is the default password, then prompt user to change it.
 $t_reset_password = $u_username == 'administrator' && auth_does_password_match( $u_id, 'root' );
 
-# note if we are being included by a script of a different name, if so,
-# this is a mandatory password change request
-$t_verify = is_page_name( 'verify.php' );
-
+$t_can_change_password = helper_call_custom_function( 'auth_can_change_password', array() );
 $t_force_pw_reset = false;
 
-if( $t_verify || $t_reset_password ) {
-	$t_can_change_password = helper_call_custom_function( 'auth_can_change_password', array() );
-
-	echo '<div id="reset-passwd-msg" class="important-msg">';
-	echo '<ul>';
-
-	if( $t_verify ) {
-		echo '<li>' . lang_get( 'verify_warning' ) . '</li>';
-
-		if( $t_can_change_password ) {
-			echo '<li>' . lang_get( 'verify_change_password' ) . '</li>';
-			$t_force_pw_reset = true;
-		}
-	} else if( $t_reset_password && $t_can_change_password ) {
-		echo '<li>' . lang_get( 'warning_default_administrator_account_present' ) . '</li>';
-		$t_force_pw_reset = true;
-	}
-
-	echo '</ul>';
-	echo '</div>';
+if( $t_reset_password && $t_can_change_password ) {
+	?>
+	<div id="reset-passwd-msg" class="important-msg">
+		<ul>
+			<li><?php echo lang_get( 'warning_default_administrator_account_present' ) ?></li>
+		</ul>
+	</div>
+	<?php
+	$t_force_pw_reset = true;
 }
 
 $t_force_pw_reset_html = '';
@@ -143,7 +129,7 @@
 			<?php echo form_security_field( 'account_update' );
 			print_account_menu( 'account_page.php' );
 
-			if( !helper_call_custom_function( 'auth_can_change_password', array() ) ) {
+			if( !$t_can_change_password ) {
 				# With LDAP -->
 			?>
 			<div class="field-container">