[devices]: remove Dell S6100 qos config via swssconfig (#1483)

Signed-off-by: Sihui Han <[email protected]>

Author: sihuihan88

dockers/docker-orchagent/swssconfig.sh

@@ -43,10 +43,6 @@ HWSKU=`sonic-cfggen -d -v "DEVICE_METADATA['localhost']['hwsku']"`
 
 SWSSCONFIG_ARGS="00-copp.config.json ipinip.json ports.json switch.json "
 
-if [ "$HWSKU" == "Force10-S6100" ]; then
-    SWSSCONFIG_ARGS+="th.64ports.buffers.json th.64ports.qos.json "
-fi
-
 for file in $SWSSCONFIG_ARGS; do
     swssconfig /etc/swss/config.d/$file
     sleep 1