Delete a row from a table in a database.
    :param dbconn: data base connection
    :param table_name: name of the table
    :param field: field of the table to target
    :param value: value of the field in the table to delete

def delete_row(dbconn, table_name, field, value):
    """
    Delete a row from a table in a database.
    :param dbconn: data base connection
    :param table_name: name of the table
    :param field: field of the table to target
    :param value: value of the field in the table to delete
    """
    cur = dbconn.cursor()
    cur.execute("DELETE FROM '{name}' WHERE {field}='{value}'".format(name=table_name, field=field, value=value))
    dbconn.commit()