Fix linting

tests/Services/IterationEventBuffer/DullIterationEventBuffer.php

@@ -4,19 +4,13 @@ namespace Tests\Services\IterationEventBuffer;
 
 use App\Services\IterationEventBuffer\IPerceptronIterationEventBuffer;
 
-class DullIterationEventBuffer implements IPerceptronIterationEventBuffer {
-
+class DullIterationEventBuffer implements IPerceptronIterationEventBuffer
+{
     public function __construct(
 
-    ) {
+    ) {}
 
-    }
+    public function flush(): void {}
 
-    public function flush(): void {
-        return;
-    }
-
-    public function addIteration(int $epoch, int $exampleIndex, float $error, array $synaptic_weights): void {
-        return;
-    }
+    public function addIteration(int $epoch, int $exampleIndex, float $error, array $synaptic_weights): void {}
 }