code: @Deprecated
      public void deleteCategory(IssueCategory category) throws RedmineException {
          transport.deleteObject(IssueCategory.class,
                  Integer.toString(category.getId()));
      }
docs: DEPRECATED. use category.delete() instead
  
  deletes an {@link IssueCategory}. <br>
  
  @param category the {@link IssueCategory}.
  @throws RedmineAuthenticationException thrown in case something went wrong while trying to login
  @throws RedmineException        thrown in case something went wrong in Redmine
  @throws NotFoundException       thrown in case an object can not be found