Update CraftBukkit to Minecraft 1.4(.2).

src/main/java/org/bukkit/craftbukkit/CraftServer.java

@@ -731,10 +731,6 @@ public final class CraftServer implements Server {
 
                     ChunkCoordinates chunkcoordinates = internal.getSpawn();
                     internal.chunkProviderServer.getChunkAt(chunkcoordinates.x + j >> 4, chunkcoordinates.z + k >> 4);
-
-                    while (internal.updateLights()) {
-                        ;
-                    }
                 }
             }
         }