Revert ESP-MQTT (#508)

* Revert ESP-MQTT

* Revert ESP-MQTT

* Update sdkconfig.defaults

lib/espMqttClient/examples/simple-esp32-idf/sdkconfig.defaults

@@ -0,0 +1,39 @@
+#
+# Bootloader config
+#
+CONFIG_BOOTLOADER_COMPILER_OPTIMIZATION_SIZE=y
+CONFIG_BOOTLOADER_LOG_LEVEL_NONE=y
+CONFIG_BOOTLOADER_LOG_LEVEL=0
+
+#
+# Serial flasher config
+#
+CONFIG_ESPTOOLPY_FLASHMODE_DIO=y
+CONFIG_ESPTOOLPY_FLASHMODE="dio"
+CONFIG_ESPTOOLPY_FLASHFREQ_40M=y
+CONFIG_ESPTOOLPY_FLASHFREQ="40m"
+CONFIG_ESPTOOLPY_FLASHSIZE_4MB=y
+CONFIG_ESPTOOLPY_FLASHSIZE="4MB"
+#
+# Partition Table
+#
+CONFIG_PARTITION_TABLE_CUSTOM=n
+
+#
+# Arduino Configuration
+#
+CONFIG_ARDUINO_VARIANT="esp32"
+CONFIG_ENABLE_ARDUINO_DEPENDS=y
+CONFIG_AUTOSTART_ARDUINO=y
+
+#
+# FreeRTOS
+#
+# 1000 require for Arduino
+CONFIG_FREERTOS_HZ=1000
+
+#ASYNC_TCP
+CONFIG_ASYNC_TCP_RUN_NO_AFFINITY=y
+
+#MBEDTLS
+CONFIG_MBEDTLS_PSK_MODES=y