Remove vpp_promisc.sh; promisc now set via sairedis VPP API

Promiscuous mode on the VPP DPDK physical interfaces is now configured
directly through the sairedis VPP API (interface_set_promiscuous, called
at LCP pair creation and after bond member enslave) instead of the
supervisord-managed vpp_promisc.sh polling script.

Remove the now-redundant vpp_promisc.sh / vpp_promisc.conf and their COPY
lines from both docker-sonic-vpp and docker-syncd-vpp.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Signed-off-by: Lun Yue <17232861+lunyue-ms@users.noreply.github.com>

Author: lunyue-ms

docker-sonic-vpp/Dockerfile.j2

@@ -175,11 +175,9 @@ RUN mkdir -p /var/log/asan
 COPY scripts/start_sonic.sh /usr/local/bin/
 COPY scripts/vpp_hostif.sh /usr/local/bin/
 COPY scripts/vpp_init.sh /usr/local/bin/
-COPY scripts/vpp_promisc.sh /usr/local/bin/
 COPY scripts/vppcfg_load.py /usr/local/bin/
 
 COPY conf/vpp_init.conf /etc/supervisor/conf.d/
-COPY conf/vpp_promisc.conf /etc/supervisor/conf.d/
 COPY conf/startup.conf.tmpl  /etc/vpp/
 COPY conf/init_cfg.json.j2 /usr/share/sonic/templates/
 COPY conf/constants.yml /etc/sonic/

docker-sonic-vpp/conf/vpp_promisc.conf

@@ -30,10 +30,8 @@ COPY ["critical_processes", "/etc/supervisor/"]
 
 COPY scripts/vpp_hostif.sh /usr/local/bin/
 COPY scripts/vpp_init.sh /usr/local/bin/
-COPY scripts/vpp_promisc.sh /usr/local/bin/
 
 COPY conf/vpp_init.conf /etc/supervisor/conf.d/
-COPY conf/vpp_promisc.conf /etc/supervisor/conf.d/
 COPY conf/startup.conf.tmpl  /etc/vpp/
 
 ## Clean up