Refactor settler node: remove unused inlet input and enhance effluent calculation logic

settler.html

@@ -42,11 +42,6 @@
       if (window.EVOLV?.nodes?.measurement?.positionMenu?.saveEditor) {
         window.EVOLV.nodes.rotatingMachine.positionMenu.saveEditor(this);
       }
-
-      const inlet = parseInt($("#node-input-n_inlets").typedInput("value"));
-      if (inlet < 1) {
-        RED.notify("Number of inlets not set correctly", {type: "error"});
-      }
     }
   });
 </script>
@@ -56,10 +51,6 @@
     <label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
     <input type="text" id="node-input-name" placeholder="Name">
   </div>
-  <div class="form-row">
-    <label for="node-input-inlet"><i class="fa fa-tag"></i> Assigned inlet return line</label>
-    <input type="text" id="node-input-inlet" placeholder="#">
-  </div>
 
   <!-- Logger fields injected here -->
   <div id="logger-fields-placeholder"></div>