Removed redundant imagedestroy calls in Image.php.

app/application/app/Captcha/Images/Image.php

@@ -43,7 +43,6 @@ final class Image implements ImageContract
             src_width: $backgroundWidth,
             src_height: $backgroundHeight
         );
-        imagedestroy($background);
 
         return $this;
     }
@@ -104,10 +103,6 @@ final class Image implements ImageContract
         );
     }
 
-    public function __destruct() {
-        imagedestroy($this->image);
-    }
-
     /**
      * @throws CaptchaException
      */