Cleanup dependencies

SpigotCore_API/pom.xml

@@ -29,14 +29,4 @@
             </resource>
         </resources>
     </build>
-
-    <dependencies>
-        <dependency>
-            <groupId>steamwar</groupId>
-            <artifactId>Spigot</artifactId>
-            <version>1.15</version>
-            <scope>system</scope>
-            <systemPath>${main.basedir}/lib/Spigot-1.15.jar</systemPath>
-        </dependency>
-    </dependencies>
 </project>