Fixed package info for help package and removed NotNull annotations (#727)

* fixed package info for help package

* removed notnull annotations

Author: Taz03

application/src/main/java/org/togetherjava/tjbot/commands/bookmarks/LeftoverBookmarksListener.java

@@ -3,7 +3,6 @@
 import net.dv8tion.jda.api.events.guild.member.GuildMemberJoinEvent;
 import net.dv8tion.jda.api.events.guild.member.GuildMemberRemoveEvent;
 import net.dv8tion.jda.api.hooks.ListenerAdapter;
-import org.jetbrains.annotations.NotNull;
 
 import org.togetherjava.tjbot.commands.EventReceiver;
 
@@ -25,14 +24,14 @@ public LeftoverBookmarksListener(BookmarksSystem bookmarksSystem) {
     }
 
     @Override
-    public void onGuildMemberRemove(@NotNull GuildMemberRemoveEvent event) {
+    public void onGuildMemberRemove(GuildMemberRemoveEvent event) {
         long userID = event.getUser().getIdLong();
 
         bookmarksSystem.startDeletionPeriodForUser(userID);
     }
 
     @Override
-    public void onGuildMemberJoin(@NotNull GuildMemberJoinEvent event) {
+    public void onGuildMemberJoin(GuildMemberJoinEvent event) {
         long userID = event.getUser().getIdLong();
 
         bookmarksSystem.cancelDeletionPeriodForUser(userID);

application/src/main/java/org/togetherjava/tjbot/commands/help/HelpThreadCreatedListener.java

@@ -14,8 +14,6 @@
 
 import org.togetherjava.tjbot.commands.EventReceiver;
 
-import javax.annotation.Nonnull;
-
 import java.time.Instant;
 import java.time.temporal.ChronoUnit;
 import java.util.concurrent.Executors;
@@ -48,7 +46,7 @@ public HelpThreadCreatedListener(HelpSystemHelper helper) {
     }
 
     @Override
-    public void onChannelCreate(@Nonnull ChannelCreateEvent createEvent) {
+    public void onChannelCreate(ChannelCreateEvent createEvent) {
         if (!createEvent.getChannelType().isThread()) {
             return;
         }

application/src/main/java/org/togetherjava/tjbot/commands/help/package-info.java

@@ -1,6 +1,7 @@
 /**
- * This package offers all functionality for the help system. For example commands that let users
- * ask questions, such as {@link org.togetherjava.tjbot.commands.help.AskCommand}.
+ * This package offers all functionality for the help system. For example commands that handles the
+ * actions taken after creating a help thread
+ * {@link org.togetherjava.tjbot.commands.help.HelpThreadCreatedListener}.
  */
 @MethodsReturnNonnullByDefault
 @ParametersAreNonnullByDefault