ESP-IDF: Removed explicit esp_task_wdt_reset call

[vikramdattu]

Why is esp_task_wdt_reset needed?:

• If the task is running for longer without yielding, this leads to the task watchdog to trigger, then one should reset the task watchdog with the mentioned API.

Points under consideration while removing the call:

• lws_service() function call is not unyielding, meaning, it does wait on socket select. Even if this function is called in a loop, it should be the caller's responsibility to yield or call esp_task_wdt_reset.
• Rightly so, the examples here do yield calling taskYIELD
• Calling esp_task_wdt_reset without calling esp_task_wdt_add has no real use and only leads benign errors.

[vikramdattu]

cc @Harshal5