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"
-    )