Remove superflous rtos::ThisThread::yield() from main thread 'loop()' (#48)

See #45.

Author: aentinger

Diff for: examples/Threading/Demo_Shared_Counter/Demo_Shared_Counter.ino

@@ -6,5 +6,5 @@ void setup()
 
 void loop()
 {
-  rtos::ThisThread::yield();
+
 }

Diff for: examples/Threading/Demo_Source_Sink_Counter/Demo_Source_Sink_Counter.ino

@@ -11,6 +11,7 @@ void setup()
   Consumer.start();
 }
 
-void loop() {
-  rtos::ThisThread::yield();
+void loop()
+{
+
 }

Diff for: examples/Threading/Demo_Source_Sink_LED/Demo_Source_Sink_LED.ino

@@ -13,5 +13,5 @@ void setup()
 
 void loop()
 {
-  rtos::ThisThread::yield();
+
 }

Diff for: examples/Threadsafe_IO/Threadsafe_Wire/Threadsafe_Wire.ino

@@ -45,11 +45,7 @@ void setup()
 
 void loop()
 {
-  /* If we don't hand back control then the main thread
-   * will hog the CPU and all other thread's won't get
-   * time to be executed.
-   */
-  rtos::ThisThread::yield();
+
 }
 
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