Removed the instructions

src/main/java/uk/tw/energy/controller/MeterReadingController.java

@@ -49,15 +49,4 @@ public ResponseEntity readReadings(@PathVariable String smartMeterId) {
                 ? ResponseEntity.ok(readings.get())
                 : ResponseEntity.notFound().build();
     }
-
-    /*
-     ******************************************************************************
-     * INSTRUCTIONS:
-     * - DO NOT change any of the code above.
-     * - You MUST implement a new API with the following endpoint:
-     * /read/total-cost/{smartMeterId}
-     ******************************************************************************
-     */
-
-    // start writing your code here
 }