change test_spar_foa_enc_system to test with agc=0, only

# TODO: create and use new 24dB signals

# agc_tag_list = ['stvFOA_24dB_']

# agc_list = [-1, 0, 1]

# don't check with current test vector that specifying "-agc 1" or not produces the same result

agc_list = [-1, 0]

sample_rate_bw_idx_list = [('48', 'SWB'), ('48', 'WB'), ('32', 'WB')]

AbsTol = '4'

@pytest.mark.parametrize("dtx", dtx_set)

@pytest.mark.parametrize("tag", tag_list)

@pytest.mark.parametrize("fs", sample_rate_list)

@pytest.mark.parametrize("agc", agc_list)

#@pytest.mark.parametrize("agc", agc_list)

def test_spar_foa_enc_system(

    dut_encoder_frontend: EncoderFrontend,

    dut_decoder_frontend: DecoderFrontend,

    dtx,

    tag,

    fs,

    agc

#    agc

):

    if update_ref == 1 and agc >= 0:

        pytest.skip()

    tag = tag + fs + 'c'

    max_bw = "FB"

    bypass = -1

    agc = 0

    use_agc_ref = 0

    sba_order = "+1"

    output_config = "FOA"