Update platformio.ini

Author: Jason2866

examples/arduino-NimBLE-ext_client/platformio.ini

@@ -12,8 +12,6 @@
 platform = espressif32
 framework = arduino
 monitor_speed = 115200
-build_flags =
-    '-DCONFIG_BT_NIMBLE_EXT_ADV=1'
 custom_component_remove =
     espressif/esp_hosted
     espressif/esp_wifi_remote
@@ -33,8 +31,8 @@ custom_component_remove =
 [env:esp32s3]
 board = esp32-s3-devkitc-1
 
-[env:esp32c2]
-board = esp32-c2-devkitm-1
+;[env:esp32c2]
+;board = esp32-c2-devkitm-1
 
 [env:esp32c3]
 board = esp32-c3-devkitm-1