Merge pull request #262 from giulcioffi/nano_issue230

Revert "Disable STDIN input to allow deepsleep"

Author: facchinm

cores/arduino/main.cpp

@@ -36,9 +36,6 @@ int main(void)
 	init();
 	initVariant();
 
-	// we are never going to use getchar/scanf directly
-	mbed::mbed_file_handle(STDIN_FILENO)->enable_input(false);
-
 #if defined(SERIAL_CDC)
   PluggableUSBD().begin();
   _SerialUSB.begin(115200);