Remove HCSR04 sensor code

arduino/read_HCSR04.ino

@@ -1,16 +0,0 @@
-#include <HCSR04.h>
-
-HCSR04 distSensor(5, 4); //initialisation class HCSR04 (trig pin , echo pin, number of sensor)
-
-void setup() { 
-  Serial.begin(9600);
-
-  pinMode(4, INPUT);
-  pinMode(5, OUTPUT);
-}
-
-void loop()
-{
-  Serial.println(distSensor.dist()); 
-  delay(100);                       
-}