Fixed some warnings

src/main/java/com/sk89q/worldedit/bukkit/WorldEditPlayerListener.java

@@ -21,7 +21,6 @@ package com.sk89q.worldedit.bukkit;
 
 import org.bukkit.Bukkit;
 import org.bukkit.block.Block;
-import org.bukkit.entity.Player;
 import org.bukkit.event.Event;
 import org.bukkit.event.player.PlayerCommandPreprocessEvent;
 import org.bukkit.event.player.PlayerInteractEvent;

src/main/java/com/sk89q/worldedit/data/Chunk.java

@@ -224,6 +224,7 @@ public class Chunk {
      * @return child tag
      * @throws InvalidFormatException
      */
+    @SuppressWarnings("unchecked")
     public static <T extends Tag> T getChildTag(Map<String,Tag> items, String key,
             Class<T> expected) throws InvalidFormatException {
         if (!items.containsKey(key)) {