Revert " [build templates] Add environment variables for mellanox syn…

…cd container to support mellanox sdk and prm sniffer. (sonic-net#1551)"

This reverts commit c8753d0.

files/build_templates/docker_image_ctl.j2

@@ -63,13 +63,6 @@ start() {
     docker run -d {{docker_image_run_opt}} \
 {%- if '--log-driver=json-file' in docker_image_run_opt or '--log-driver' not in docker_image_run_opt %}
         --log-opt max-size=2M --log-opt max-file=5 \
-{%- endif %}
-{%- if docker_container_name == "syncd" and sonic_asic_platform == "mellanox" %}
-        -e SX_SNIFFER_ENABLE \
-        -e SX_SNIFFER_TARGET \
-        -e PRM_SNIFFER \
-        -e PRM_SNIFFER_FILE_PATH \
-        -v /var/log/mellanox/sniffer:/var/log/mellanox/sniffer:rw \
 {%- endif %}
         -v /var/run/redis:/var/run/redis:rw \
         -v /usr/share/sonic/device/$PLATFORM:/usr/share/sonic/platform:ro \