more cleaning up

jams-launcher/src/main/java/launcher/AppStarter.java

@@ -87,7 +87,6 @@ public class AppStarter extends Thread {
                 }
                 if(doUpdate.get()){
                     Server.tomcatLauncher.stopTomcat();
-                    LibraryLoader.classLoader.destroy();
                     //This will trigger a force reload of the lib.
                     LibraryLoader.loadlibs(System.getProperty("user.dir"), AppStarter.class);
                     server = ServerLoader.loadServer(appUpdater, Integer.toString(port), serverCertificate, serverPrivateKey);

jams-server/src/main/java/net/jami/jams/server/Server.java

@@ -77,7 +77,7 @@ public class Server {
     }
 
 
-    public void main(String[] args) {
+    public static void main(String[] args) {
         //Start tomcat.
         switch (args.length) {
             case 0:

jams-server/src/main/java/net/jami/jams/server/core/TomcatLauncher.java

@@ -125,9 +125,7 @@ public class TomcatLauncher {
             synchronized (tomcat) {
                 certificateAuthority.shutdownThreads();
                 tomcat.stop();
-                context.destroy();
                 tomcat.destroy();
-                LibraryLoader.classLoader.destroy();
             }
         } catch (Exception e) {
             log.info("Failed to stop tomcat server with error {}", e.getMessage());