strip extra blank lines (php-cs-fixer)

src/world/format/io/data/BaseNbtWorldData.php

@@ -105,7 +105,6 @@ abstract class BaseNbtWorldData implements WorldData{
 		return $this->compoundTag;
 	}
 
-
 	/* The below are common between PC and PE */
 
 	public function getName() : string{

src/world/format/io/data/JavaWorldData.php

@@ -101,7 +101,6 @@ class JavaWorldData extends BaseNbtWorldData{
 		file_put_contents($this->dataPath, $buffer);
 	}
 
-
 	public function getDifficulty() : int{
 		return $this->compoundTag->getByte("Difficulty", World::DIFFICULTY_NORMAL);
 	}

src/world/format/io/region/CorruptedRegionException.php

@@ -21,10 +21,8 @@
 
 declare(strict_types=1);
 
-
 namespace pocketmine\world\format\io\region;
 
-
 class CorruptedRegionException extends RegionException{
 
 }

src/world/format/io/region/RegionException.php

@@ -21,10 +21,8 @@
 
 declare(strict_types=1);
 
-
 namespace pocketmine\world\format\io\region;
 
-
 class RegionException extends \RuntimeException{
 
 }