def upgrade():
    ''' Drop the columns calendar_multiple_meetings and
    calendar_regional_meetings and rename meeting_region into
    meeting_location.
    '''
    op.drop_column('calendars', 'calendar_multiple_meetings')
    op.drop_column('calendars', 'calendar_regional_meetings')
    op.alter_column(
        'meetings',
        column_name='meeting_region',
        name='meeting_location',
        type_=sa.Text,
        existing_type=sa.String(100))