Revert "update examples"

This reverts commit af3e64a06d.

boards/default_src/micropython_esp32/export.js

@@ -0,0 +1,9 @@
+import MicropythonESP32Pins from './blocks/esp32_profile';
+import * as MicropythonESP32PinsBlocks from './blocks/pins';
+import * as MicropythonESP32PinsGenerators from './generators/pins';
+
+export {
+    MicropythonESP32Pins,
+    MicropythonESP32PinsBlocks,
+    MicropythonESP32PinsGenerators
+};