Revert "[devices]: Watchdog support for DellEMC S6100 (#2741)"

This reverts commit 3a24c61.

platform/broadcom/sonic-platform-modules-dell/debian/platform-modules-s6100.install

@@ -5,7 +5,5 @@ common/io_rd_wr.py usr/local/bin
 common/fstrim.timer etc/systemd/system
 common/fstrim.service etc/systemd/system
 s6100/scripts/platform_sensors.py usr/local/bin
-s6100/scripts/platform_watchdog_enable.sh usr/local/bin
-s6100/scripts/platform_watchdog_disable.sh usr/local/bin
 s6100/scripts/sensors usr/bin
 s6100/systemd/platform-modules-s6100.service etc/systemd/system

platform/broadcom/sonic-platform-modules-dell/s6100/scripts/s6100_platform.sh

@@ -205,11 +205,6 @@ if [[ "$1" == "init" ]]; then
     modprobe dell_s6100_iom_cpld
     modprobe dell_s6100_lpc
 
-    # Disable Watcdog Timer
-    if [[ -e /usr/local/bin/platform_watchdog_disable.sh ]]; then
-        exec /usr/local/bin/platform_watchdog_disable.sh
-    fi
-
     cpu_board_mux "new_device"
     switch_board_mux "new_device"
     sys_eeprom "new_device"