How do you uninstall a plugin?

Minecraft Bukkit Server Plugin not loading HELP!!!!!!! PLEASE!?

• 174 recipes 27 achievements 18:13:20 [INFO] Starting minecraft server version 1.1 18:13:20 [INFO] Loading properties 18:13:20 [INFO] Starting Minecraft server on 5.172.146.194:25565 18:13:20 [WARNING] **** SERVER IS RUNNING IN OFFLINE/INSECURE MODE! 18:13:20 [WARNING] The server will make no attempt to authenticate usernames. Be ware. 18:13:20 [WARNING] While this makes the game possible to play without internet a ccess, it also opens up the ability for hackers to connect with any username the y choose. 18:13:20 [WARNING] To change this, set "online-mode" to "true" in the server.pro perties file. 18:13:20 [INFO] This server is running CraftBukkit version git-Bukkit-1.1-R6-b19 88jnks (MC: 1.1) (Implementing API version 1.1-R6) 18:13:20 [SEVERE] Could not load 'plugins\iZone.jar' in folder 'plugins' org.bukkit.plugin.InvalidPluginExcepti… java.lang.NoClassDefFoundError: org/bu kkit/event/block/BlockListener at org.bukkit.plugin.java.JavaPluginLoader.… ava:148) at org.bukkit.plugin.SimplePluginManager.lo… java:287) at org.bukkit.plugin.SimplePluginManager.lo… .java:211) at org.bukkit.craftbukkit.CraftServer.loadP… at org.bukkit.craftbukkit.CraftServer.<init… at net.minecraft.server.ServerConfiguration… ationManager.java:53) at net.minecraft.server.MinecraftServer.ini… at net.minecraft.server.MinecraftServer.run… at net.minecraft.server.ThreadServerApplica… Caused by: java.lang.NoClassDefFoundError: org/bukkit/event/block/BlockListener at java.lang.ClassLoader.defineClass1(Nativ… Method) at java.lang.ClassLoader.defineClass(Unknow… Source) at java.security.SecureClassLoader.defineCl… Source) at java.net.URLClassLoader.defineClass(Unkn… Source) at java.net.URLClassLoader.access$100(Unkno… Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivile… Method) at java.net.URLClassLoader.findClass(Unknow… Source) at org.bukkit.plugin.java.PluginClassLoader… java:41) at org.bukkit.plugin.java.PluginClassLoader… java:29) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at net.techguard.izone.iZone.<init>(iZone.j… at sun.reflect.NativeConstructorAccessorImp… Method) at sun.reflect.NativeConstructorAccessorImp… Source) at sun.reflect.DelegatingConstructorAccesso… Sou rce) at java.lang.reflect.Constructor.newInstanc… Source) at org.bukkit.plugin.java.JavaPluginLoader.… ava:144) ... 8 more Caused by: java.lang.ClassNotFoundException: org.bukkit.event.block.BlockListene r at java.net.URLClassLoader$1.run(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivile… Method) at java.net.URLClassLoader.findClass(Unknow… Source) at org.bukkit.plugin.java.PluginClassLoader… java:41) at org.bukkit.plugin.java.PluginClassLoader… java:29) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 27 more 18:13:20 [INFO] Preparing level "Luke CityMain" 18:13:20 [INFO] Default game type: 0 18:13:21 [INFO] Preparing start region for level 0 (Seed: 3897184116007811922) 18:13:22 [INFO] Preparing spawn area: 48% 18:13:23 [INFO] Preparing start region for level 1 (Seed: 3897184116007811922) 18:13:23 [INFO] Preparing spawn area: 0% 18:13:24 [INFO] Preparing start region for level 2 (Seed: 3897184116007811922) 18:13:24 [INFO] Preparing spawn area: 0% 18:13:25 [INFO] Server permissions file permissions.yml is empty, ignoring it 18:13:25 [INFO] Done (4.356s)! For help, type "help" or "?" >

• Answer:

  Your going to have to add mods to your server in order for that to work