Method RemoveLabelFromTaskAsync

backend/Services/ITaskService.cs:40–40

(int taskId, int labelId, int userId)

    // Label Methods
    Task<bool> AddLabelToTaskAsync(int taskId, int labelId, int userId);
    Task<bool> RemoveLabelFromTaskAsync(int taskId, int labelId, int userId);
    Task<bool> SetTaskLabelsAsync(int taskId, List<int> labelIds, int userId);
    Task<TaskActivityDto?> GetActivityByIdAsync(int activityId);
}