Remove useless code

Author: alexandre-daubois

Diff for: Dumper/PlantUmlDumper.php

@@ -115,23 +115,20 @@ public function dump(Definition $definition, ?Marking $marking = null, array $op
             }
         }
 
-        return $this->startPuml($options).$this->getLines($code).$this->endPuml($options);
+        return $this->startPuml().$this->getLines($code).$this->endPuml();
     }
 
     private function isWorkflowTransitionType(): bool
     {
         return self::WORKFLOW_TRANSITION === $this->transitionType;
     }
 
-    private function startPuml(array $options): string
+    private function startPuml(): string
     {
-        $start = '@startuml'.\PHP_EOL;
-        $start .= 'allow_mixing'.\PHP_EOL;
-
-        return $start;
+        return '@startuml'.\PHP_EOL.'allow_mixing'.\PHP_EOL;
     }
 
-    private function endPuml(array $options): string
+    private function endPuml(): string
     {
         return \PHP_EOL.'@enduml';
     }