Remove redundant checks

VelocityCore/src/de/steamwar/velocitycore/discord/DiscordBot.java

@@ -149,8 +149,6 @@ public class DiscordBot {
         announcementChannel = new DiscordChannel(config.channel("announcement")) {
             @Override
             public void received(MessageReceivedEvent event) {
-                if (!event.isFromGuild()) return;
-
                 Chatter.broadcast().system("ALERT", event.getMessage().getContentDisplay());
             }
         };

VelocityCore/src/de/steamwar/velocitycore/discord/channels/DiscordChatRoom.java

@@ -41,8 +41,6 @@ public class DiscordChatRoom extends DiscordChannel {
 
     @Override
     public void received(MessageReceivedEvent event) {
-        if (!event.isFromGuild()) return;
-
         SteamwarUser user = SteamwarUser.get(event.getAuthor().getIdLong());
         if (user == null || event.getMessage().getContentRaw().length() > 250 || user.isPunished(Punishment.PunishmentType.Ban) || user.isPunished(Punishment.PunishmentType.Mute)) {
             event.getMessage().delete().queue();

VelocityCore/src/de/steamwar/velocitycore/discord/listeners/DiscordTicketHandler.java

@@ -131,8 +131,6 @@ public class DiscordTicketHandler extends ListenerAdapter {
 
     @Override
     public void onMessageReceived(@NotNull MessageReceivedEvent event) {
-        if (!event.isFromGuild()) return;
-
         MessageChannel channel = event.getChannel();
         if(
                 channel instanceof TextChannel textChannel &&