Remove unnecessary macro (#1348)

This macro is not necessary to add per environment as it is present into com-esp as a global macro for all ESP, also modifying nodemcuv2-mqtt-fw-test env to test self signed only. Removing env:esp32dev-mqtt-fw-test as self signed cert are already tested into env:esp32dev-ble-aws.

Co-authored-by: Florian <1technophile@users.noreply.github.com>

.github/workflows/build.yml

@@ -46,7 +46,6 @@ jobs:
           - "ttgo-t-beam"
           - "heltec-wifi-lora-32-868"
           - "heltec-wifi-lora-32-915"
-          - "esp32dev-mqtt-fw-test"
           - "nodemcuv2-all-test"
           - "nodemcuv2-fastled-test"
           - "nodemcuv2-2g"