ARMmbed#64 Assume "PC connected" at the start of USB communication in…

…stead of waiting for the whole enumeration process to be finished.

source/board/microbitv2/microbitv2.c

@@ -220,9 +220,6 @@ void board_30ms_hook()
   static uint8_t blink_in_progress = 0;
 
     if (usb_state == USB_CONNECTED) {
-        /* Set usb_pc_connected to true to prevent entering sleep mode when host does re-enumeration.
-        *  Will be set to false when the USB cable is detached. */
-        usb_pc_connected = true;
         // configure pin as GPIO
         gpio_enable_hid_led();
         power_led_max_duty_cycle = PWR_LED_ON_MAX_BRIGHTNESS;