Changes

ipaccess_line_update: drop set_priority and set_ip_dscp

Do not run osmo_stream_cli_set_priority() and
osmo_stream_cli_set_ip_dscp() in ipaccess_line_update(). These functions
are not available yet in libosmo-netif 1.5.x and cause the build to
fail.

g_e1inp_ipaccess_config_pars.oml.dscp and
g_e1inp_ipaccess_config_pars.oml.priority are not set anyway, so this
makes no functional difference.

Suggested-by: Pau Espin Pedrol <pespin@sysmocom.de>
Change-Id: Ic46af94db8e0d821c5ca559e96c72d5041d32823