Removed implementation classes

Leaves only the framework in the compiled clause.
Find the removed files in ../examples/misc/

examples/misc/FrameRateSystem.java

@@ -0,0 +1,15 @@
+package nz.ac.massey.javaecs;
+
+public class FrameRateSystem extends ECSSystem{
+    @Override
+    void init() {}
+
+    @Override
+    void update() {}
+
+    void update(double dt, double idleTime){
+        System.out.print(String.format("dt: %.3g (%.3g idle) ", dt, idleTime));
+    }
+
+
+}