Remove deprecated WorldGroupManager methods

Author: benwoo1110

src/main/java/org/mvplugins/multiverse/inventories/profile/group/AbstractWorldGroupManager.java

@@ -99,15 +99,6 @@ protected Map<String, WorldGroup> getGroupNames() {
         return groupNamesMap;
     }
 
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    @Deprecated
-    public void addGroup(final WorldGroup worldGroup, final boolean persist) {
-        updateGroup(worldGroup);
-    }
-
     @Override
     public void updateGroup(final WorldGroup worldGroup) {
         getGroupNames().put(worldGroup.getName().toLowerCase(), worldGroup);
@@ -135,14 +126,6 @@ public WorldGroup newEmptyGroup(String name) {
         return new WorldGroup(this, profileContainerStoreProvider, name);
     }
 
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    @Deprecated
-    public void setGroups(List<WorldGroup> worldGroups) {
-    }
-
     /**
      * {@inheritDoc}
      */

src/main/java/org/mvplugins/multiverse/inventories/profile/group/WorldGroupManager.java

@@ -53,25 +53,6 @@ public sealed interface WorldGroupManager permits AbstractWorldGroupManager {
      */
     boolean hasGroup(String worldName);
 
-    /**
-     * Sets up the World Groups in memory.
-     *
-     * @param worldGroups List of World Groups to store in memory.
-     * @deprecated This feature is now completely unused.
-     */
-    @Deprecated
-    void setGroups(List<WorldGroup> worldGroups);
-
-    /**
-     * Adds a World Group to the collection in memory, also writing it to the groups configuration.
-     *
-     * @param worldGroup World group to add. Casing is ignored.
-     * @param persist    This parameter is unused due to deprecation of the method.
-     * @deprecated
-     */
-    @Deprecated
-    void addGroup(WorldGroup worldGroup, boolean persist);
-
     /**
      * <p>Adds or updates a world group in Multiverse-Inventories.</p>
      *