Remove unused import

Whoops D:

src/main/java/com/gmail/nossr50/skills/fishing/ShakeMob.java

@@ -4,7 +4,6 @@ import java.util.HashMap;
 import java.util.Map;
 import java.util.Map.Entry;
 
-import org.bukkit.DyeColor;
 import org.bukkit.Material;
 import org.bukkit.entity.LivingEntity;
 import org.bukkit.entity.Player;