qcacld-3.0: Remove CONFIG_QCA_IBSS_SUPPORT for Rome

Remove CONFIG_QCA_IBSS_SUPPORT for Rome device

Change-Id: Ief8e538469014c0034e5a8fdf8d25939fc2c4362
CRs-Fixed: 2556723

configs/qca6174_defconfig

@@ -417,7 +417,6 @@ CONFIG_FEATURE_WLAN_STA_AP_MODE_DFS_DISABLE := y
 CONFIG_FEATURE_AP_MCC_CH_AVOIDANCE := y
 else
 CONFIG_QCOM_ESE := y
-CONFIG_QCA_IBSS_SUPPORT := y
 CONFIG_FEATURE_WLAN_RMC := y
 CONFIG_WLAN_OPEN_P2P_INTERFACE := y
 CONFIG_WLAN_ENABLE_SOCIAL_CHANNELS_5G_ONLY := y