More stringable removal for performance.

src/FactorGraphs/ScheduleStep.php

@@ -6,15 +6,12 @@ namespace DNW\Skills\FactorGraphs;
 
 class ScheduleStep extends Schedule
 {
-    public function __construct(string $name, private readonly Factor $factor, private readonly int $index)
+    public function __construct(private readonly Factor $factor, private readonly int $index)
     {
-        parent::__construct($name);
     }
 
     public function visit(int $depth = -1, int $maxDepth = 0): float
     {
-        $currentFactor = $this->factor;
-
-        return $currentFactor->updateMessageIndex($this->index);
+        return $this->factor->updateMessageIndex($this->index);
     }
 }