[docker/brcm-syncd-rpc]: remove duplicated "--net" options in broadco…

…m syncd rpc (#4296)

In the file "files/build_templates/docker_image_ctl.j2", it adds the option
"--net" to the docker create command through the commit
"abe7ef7e2e2e1215c97cee19a83aab0b130cebe5" (#3856).

Remove the "--net" option in "docker-syncd-brcm-rpc.mk" to avoid
specifying duplicated "--net" options.

Signed-off-by: charlie_chen <charlie_chen@edge-core.com>

platform/broadcom/docker-syncd-brcm-rpc.mk

@@ -18,7 +18,7 @@ SONIC_INSTALL_DOCKER_IMAGES += $(DOCKER_SYNCD_BRCM_RPC)
 endif
 
 $(DOCKER_SYNCD_BRCM_RPC)_CONTAINER_NAME = syncd
-$(DOCKER_SYNCD_BRCM_RPC)_RUN_OPT += --net=host --privileged -t
+$(DOCKER_SYNCD_BRCM_RPC)_RUN_OPT += --privileged -t
 $(DOCKER_SYNCD_BRCM_RPC)_RUN_OPT += -v /host/machine.conf:/etc/machine.conf
 $(DOCKER_SYNCD_BRCM_RPC)_RUN_OPT += -v /host/warmboot:/var/warmboot
 $(DOCKER_SYNCD_BRCM_RPC)_RUN_OPT += -v /var/run/docker-syncd:/var/run/sswsyncd