fix println + cleanup

Author: ysoldak

examples/wifinina/connect/main.go

@@ -19,17 +19,13 @@ const pass = ""
 var (
 
 	// these are the default pins for the Arduino Nano33 IoT.
-	uart = machine.UART2
-	tx   = machine.NINA_TX
-	rx   = machine.NINA_RX
-	spi  = machine.NINA_SPI
+	spi = machine.NINA_SPI
 
 	// this is the ESP chip that has the WIFININA firmware flashed on it
 	adaptor *wifinina.Device
 )
 
 func setup() {
-	uart.Configure(machine.UARTConfig{TX: tx, RX: rx})
 
 	// Configure SPI for 8Mhz, Mode 0, MSB First
 	spi.Configure(machine.SPIConfig{
@@ -82,7 +78,7 @@ func printTime() {
 	if err != nil {
 		println("Unknown (error: ", err.Error(), ")")
 	}
-	fmt.Printf("%v\n", time.Unix(int64(t), 0))
+	println(time.Unix(int64(t), 0).String())
 }
 
 func printMacAddress() {