Removed Serial.begin() inside examples where not needed

build/shared/examples/07.Display/RowColumnScanning/RowColumnScanning.ino

@@ -50,9 +50,7 @@ int x = 5;
 int y = 5;
 
 void setup() {
-  Serial.begin(9600);
-  // initialize the I/O pins as outputs:
-
+  // initialize the I/O pins as outputs
   // iterate over the pins:
   for (int thisPin = 0; thisPin < 8; thisPin++) {
     // initialize the output pins:

libraries/Stepper/examples/stepper_speedControl/stepper_speedControl.ino

@@ -26,11 +26,10 @@ const int stepsPerRevolution = 200;  // change this to fit the number of steps p
 // initialize the stepper library on pins 8 through 11:
 Stepper myStepper(stepsPerRevolution, 8,9,10,11);            
 
-int stepCount = 0;         // number of steps the motor has taken
+int stepCount = 0;  // number of steps the motor has taken
 
 void setup() {
-  // initialize the serial port:
-  Serial.begin(9600);
+  // nothing to do inside the setup
 }
 
 void loop() {