diff --git a/src/main/java/one/eim/gravitycontrol/Compatibility.java b/src/main/java/one/eim/gravitycontrol/Compatibility.java
deleted file mode 100644
index 7c6e00e..0000000
--- a/src/main/java/one/eim/gravitycontrol/Compatibility.java
+++ /dev/null
@@ -1,30 +0,0 @@
-package one.eim.gravitycontrol;
-
-import org.bukkit.Bukkit;
-import org.bukkit.plugin.Plugin;
-
-public class Compatibility {
-
-  public static Boolean IS_FOLIA = null;
-
-  private static boolean methodExist(Class<?> clazz, String methodName, Class<?>... parameterTypes) {
-    try {
-      clazz.getDeclaredMethod(methodName, parameterTypes);
-      return true;
-    } catch (Throwable ignored) {}
-    return false;
-  }
-
-  public static Boolean isFolia() {
-    if (IS_FOLIA == null) IS_FOLIA = methodExist(Bukkit.class, "getGlobalRegionScheduler");
-    return IS_FOLIA;
-  }
-
-  public static void runTaskAsync(Plugin plugin, Runnable runnable) {
-    if (isFolia()) {
-      Bukkit.getAsyncScheduler().runNow(plugin, (task) -> runnable.run());
-      return;
-    }
-    Bukkit.getScheduler().runTaskAsynchronously(plugin, runnable);
-  }
-}