Remove Ist/Soll header row from LCD panel to save vertical space

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SH2D4LRuCnhLSzoYerAfJX

web/index.html

@@ -88,13 +88,7 @@
 <div id="col-center">
 <div id="lcd-pot-row">
 <div id="lcd-panel">
-	<div class="lcd-row lcd-header">
-		<div class="lcd-label"></div>
-		<div>Ist</div>
-		<div>Soll</div>
-		<div></div>
-	</div>
-	<div class="lcd-row">
+<div class="lcd-row">
 		<div class="lcd-label">Temperature</div>
 		<div class="lcd" id="lcd-temp-ist">--</div>
 		<div class="lcd" id="lcd-temp-soll">--</div>