Removed implementation classes

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

examples/misc/LogVec2DSystem.java

@@ -0,0 +1,23 @@
+package nz.ac.massey.javaecs;
+
+public class LogVec2DSystem extends ECSSystem{
+    ECS gameEngine;
+    public LogVec2DSystem(ECS gameEngine){
+        this.gameEngine = gameEngine;
+    }
+
+    @Override
+    void init() {}
+
+    @Override
+    void update() {}
+
+    void update(double dt){
+        for (Integer entity : entities) {
+            Vec2D pos = (Vec2D)gameEngine.getComponentData(entity, Vec2D.class);
+            System.out.println(String.format("X: %.6g, Y: %.6g", pos.x, pos.y));
+        }
+    }
+
+    
+}