chore (pio): reverted to default paltformio config file

platformio.ini

@@ -9,17 +9,17 @@
 ; https://docs.platformio.org/page/projectconf.html
 
 ;[env:nodemcu-32s]
-[env:az-delivery-devkit-v4]
+[env:lolin32]
 platform = espressif32
-board = az-delivery-devkit-v4
+;board = nodemcu-32s
+board = lolin32
 framework = arduino
 monitor_speed = 115200
 board_build.partitions = no_ota.csv
+;board_build.partitions = min_spiffs.csv
+
 upload_port = /dev/cu.SLAB_USBtoUART
 monitor_port = /dev/cu.SLAB_USBtoUART
-build_flags = -O2
-build_unflags = -Os
-
 
 lib_deps =
  https://github.com/schreibfaul1/ESP32-audioI2S.git