Delete a collection from the collection table of the database
     
    
    Usage
    deleteCollection(conn_handler, collection_id, verbose = TRUE)
 
    
    Arguments
- conn_handler
- A handler uses to establish connection to the database
obtained from SigRepo::newConnhandler() (required) 
- collection_id
- ID of the collection being removed from the database (required) 
- verbose
- a logical value indicates whether or not to print the
diagnostic messages. Default is - TRUE.