Removed cache in Query for deletion of Items. Fixes:

java.lang.reflect.InvocationTargetException
  	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
  	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
  	at java.lang.reflect.Method.invoke(Unknown Source)
  	at com.geNAZt.RegionShop.Interface.CLI.CommandExecutor.onCommand(CommandExecutor.java:123)
  	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
  	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:192)
  	at org.bukkit.craftbukkit.v1_6_R3.CraftServer.dispatchCommand(CraftServer.java:527)
  	at net.minecraft.server.v1_6_R3.PlayerConnection.handleCommand(PlayerConnection.java:976)
  	at net.minecraft.server.v1_6_R3.PlayerConnection.chat(PlayerConnection.java:887)
  	at net.minecraft.server.v1_6_R3.PlayerConnection.a(PlayerConnection.java:834)
  	at net.minecraft.server.v1_6_R3.Packet3Chat.handle(SourceFile:49)
  	at org.spigotmc.netty.NettyNetworkManager.b(NettyNetworkManager.java:230)
  	at net.minecraft.server.v1_6_R3.PlayerConnection.e(PlayerConnection.java:116)
  	at net.minecraft.server.v1_6_R3.ServerConnection.b(SourceFile:37)
  	at org.spigotmc.netty.NettyServerConnection.b(NettyServerConnection.java:132)
  	at net.minecraft.server.v1_6_R3.MinecraftServer.t(MinecraftServer.java:594)
  	at net.minecraft.server.v1_6_R3.DedicatedServer.t(DedicatedServer.java:240)
  	at net.minecraft.server.v1_6_R3.MinecraftServer.s(MinecraftServer.java:483)
  	at net.minecraft.server.v1_6_R3.MinecraftServer.run(MinecraftServer.java:415)
  	at net.minecraft.server.v1_6_R3.ThreadServerApplication.run(SourceFile:583)
  Caused by: javax.persistence.OptimisticLockException: Data has changed. updated [0] rows sql[delete from rs_items where id=? and buy=? and sell=? and current_amount=? and unit_amount=? and sold=? and bought=? and custom_name is null and owner=? and durability=? and item_storage_id=? and item_id=? and data_value=?] bind[null]
  	at com.avaje.ebeaninternal.server.persist.dml.DmlHandler.checkRowCount(DmlHandler.java:122)
  	at com.avaje.ebeaninternal.server.persist.dml.DeleteHandler.execute(DeleteHandler.java:82)
  	at com.avaje.ebeaninternal.server.persist.dml.DmlBeanPersister.execute(DmlBeanPersister.java:105)
  	at com.avaje.ebeaninternal.server.persist.dml.DmlBeanPersister.delete(DmlBeanPersister.java:67)
  	at com.avaje.ebeaninternal.server.persist.DefaultPersistExecute.executeDeleteBean(DefaultPersistExecute.java:128)
  	at com.avaje.ebeaninternal.server.core.PersistRequestBean.executeNow(PersistRequestBean.java:508)
  	at com.avaje.ebeaninternal.server.core.PersistRequestBean.executeOrQueue(PersistRequestBean.java:530)
  	at com.avaje.ebeaninternal.server.persist.DefaultPersister.delete(DefaultPersister.java:661)
  	at com.avaje.ebeaninternal.server.persist.DefaultPersister.delete(DefaultPersister.java:471)
  	at com.avaje.ebeaninternal.server.core.DefaultServer.delete(DefaultServer.java:1886)
  	at com.avaje.ebeaninternal.server.core.DefaultServer.delete(DefaultServer.java:1876)
  	at com.geNAZt.RegionShop.Interface.CLI.Commands.Remove.remove(Remove.java:73)
  	... 21 more