Remove Quirk for YUV/RGB CSC color primaries (iHD)

The GST_VAAPI_DRIVER_QUIRK_NO_RGBYUV_VPP_COLOR_PRIMARY introduced in !287 (merged) is no longer needed for iHD. The driver fixed it in https://github.com/intel/media-driver/issues/860#issuecomment-618546499.

Thus, remove the quirk when distros catch up to this iHD fix.