diff --git a/src/Server.php b/src/Server.php
index 3c8c2e4c6..7168341f7 100644
--- a/src/Server.php
+++ b/src/Server.php
@@ -111,19 +111,16 @@ use pocketmine\world\WorldCreationOptions;
 use pocketmine\world\WorldManager;
 use Ramsey\Uuid\UuidInterface;
 use Webmozart\PathUtil\Path;
-use function array_shift;
 use function array_sum;
 use function base64_encode;
 use function cli_set_process_title;
 use function copy;
 use function count;
-use function explode;
 use function file_exists;
 use function file_get_contents;
 use function file_put_contents;
 use function filemtime;
 use function get_class;
-use function implode;
 use function ini_set;
 use function is_array;
 use function is_string;
diff --git a/src/world/generator/Flat.php b/src/world/generator/Flat.php
index 3afab55db..fff96db94 100644
--- a/src/world/generator/Flat.php
+++ b/src/world/generator/Flat.php
@@ -24,19 +24,13 @@ declare(strict_types=1);
 namespace pocketmine\world\generator;
 
 use pocketmine\block\VanillaBlocks;
-use pocketmine\item\LegacyStringToItemParser;
-use pocketmine\item\LegacyStringToItemParserException;
 use pocketmine\world\ChunkManager;
 use pocketmine\world\format\Chunk;
 use pocketmine\world\format\SubChunk;
 use pocketmine\world\generator\object\OreType;
 use pocketmine\world\generator\populator\Ore;
 use pocketmine\world\generator\populator\Populator;
-use function array_map;
 use function count;
-use function explode;
-use function preg_match;
-use function preg_match_all;
 
 class Flat extends Generator{
 
diff --git a/src/world/generator/FlatGeneratorOptions.php b/src/world/generator/FlatGeneratorOptions.php
index 6c3f20a9c..98d2f16a2 100644
--- a/src/world/generator/FlatGeneratorOptions.php
+++ b/src/world/generator/FlatGeneratorOptions.php
@@ -62,7 +62,6 @@ final class FlatGeneratorOptions{
 	 */
 	public function getExtraOptions() : array{ return $this->extraOptions; }
 
-
 	/**
 	 * @return int[]
 	 * @phpstan-return array<int, int>