fix: remove special handling for ^C stop command (pterodactyl#5132)

Author: danny6167

app/Services/Eggs/EggConfigurationService.php

@@ -64,12 +64,6 @@ protected function convertStopToNewFormat(string $stop): array
         }
 
         $signal = substr($stop, 1);
-        if (strtoupper($signal) === 'C') {
-            return [
-                'type' => 'stop',
-                'value' => null,
-            ];
-        }
 
         return [
             'type' => 'signal',