remove unused libs like tls

CmakeLists.txt

@@ -78,8 +78,6 @@ target_link_libraries(${TARGET_NAME}
     hardware_adc
     pico_cyw43_arch_lwip_threadsafe_background
     pico_lwip_mqtt
-    pico_mbedtls
-    pico_lwip_mbedtls
     )
 
 target_include_directories(${TARGET_NAME} PRIVATE
@@ -96,10 +94,3 @@ target_compile_definitions(${TARGET_NAME} PRIVATE
     )
 
 pico_add_extra_outputs(${TARGET_NAME})
-
-# Ignore warnings from lwip code
-set_source_files_properties(
-    ${PICO_LWIP_PATH}/src/apps/altcp_tls/altcp_tls_mbedtls.c
-    PROPERTIES
-    COMPILE_OPTIONS "-Wno-unused-result"
-    )

mqtt_client.c

@@ -1,22 +1,13 @@
 /**
- * Copyright (c) 2022 Raspberry Pi (Trading) Ltd.
- *
- * SPDX-License-Identifier: BSD-3-Clause
+ * MQTT Client to publish sensor data to homeassistant
+ * MQTT client doc: https://www.nongnu.org/lwip/2_1_x/group__mqtt.html#gafdfa0e65b217e92835d35858924565cf
+ * PICO W MQTT example: https://github.com/raspberrypi/pico-examples/blob/master/pico_w/wifi/mqtt/README
  */
 
-//
-// Created by elliot on 25/05/24.
-//
 #include "pico/stdlib.h"
 #include "pico/cyw43_arch.h"
-#include "pico/unique_id.h"
-#include "hardware/gpio.h"
-#include "hardware/irq.h"
 #include "hardware/adc.h"
 #include "lwip/apps/mqtt.h"
-#include "lwip/apps/mqtt_priv.h" // needed to set hostname
-#include "lwip/dns.h"
-#include "lwip/altcp_tls.h"
 
 // Temperature
 #ifndef TEMPERATURE_UNITS