legacy: Remove unneeded stack/rfcomm/rfc_mx_fsm::rfc_mx_send_config_req am:...

legacy: Remove unneeded stack/rfcomm/rfc_mx_fsm::rfc_mx_send_config_req am: 5c464895 am: 9f1c7ed1 am: 8e24aca4

Original change: https://android-review.googlesource.com/c/platform/system/bt/+/1817424

Change-Id: I10a0267a62bfd703a064443108fac382684981c3