fix: remove empty title divs for improved layout consistency

- Removed empty `<div class="title nocontrol">&nbsp;</div>` elements from EthX.page, NetworkRules.page, and Wireless.page to streamline the HTML structure.
- This change continues the effort to enhance visual consistency across the plugin.

emhttp/plugins/dynamix/EthX.page

@@ -73,7 +73,6 @@ $(function() {
 });
 </script>
 
-<div class="title nocontrol">&nbsp;</div>
 <form markdown="1" name="ethX_settings" method="POST" action="/update.php" target="progressFrame" onchange="signalRun(this,2)" onsubmit="return prepareSettings(this)">
 <input type="hidden" name="#file" value="<?=$ini?>">
 <input type="hidden" name="#include" value="/webGui/include/update.ethernet.php">

emhttp/plugins/dynamix/NetworkRules.page

@@ -54,7 +54,6 @@ function update_info(id,mac) {
   $('#info-'+id).html(info['_'+mac.replace(/:/g,'')]);
 }
 </script>
-<div class="title nocontrol">&nbsp;</div>
 <form markdown="1" name="network_rules" method="POST" action="/update.php" target="progressFrame" onsubmit="return check_rules(this)">
 <input type="hidden" name="#file" value="not-used">
 <input type="hidden" name="#include" value="/webGui/include/update.rules.php">

emhttp/plugins/dynamix/Wireless.page

@@ -21,7 +21,6 @@ $cfg     = '/boot/config/wireless.cfg';
 $regions = file("$docroot/webGui/include/regions.key", FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
 if (file_exists($cfg)) $wlan0 = parse_ini_file($cfg,true)['wlan0'];
 ?>
-<div class="title nocontrol">&nbsp;</div>
 <form markdown="1" name="wifi_settings" method="POST" action="/update.php" target="progressFrame" onsubmit="enable_wifi(this.WIFI.value)">
 <input type="hidden" name="#file" value="<?=$cfg?>"/>
 <input type="hidden" name="#section" value="wlan0"/>