exclude bstats from worldguard dependency

pom.xml

@@ -83,6 +83,10 @@
                         <groupId>com.sk89q</groupId>
                         <artifactId>commandbook</artifactId>
                     </exclusion>
+                    <exclusion>
+                        <groupId>org.bstats</groupId>
+                        <artifactId>bstats-bukkit</artifactId>
+                    </exclusion>
             </exclusions>
         </dependency>
          <!--Vault dependency-->