Remove unncessary constructors for Input object.

Author: phipag

powertools-e2e-tests/handlers/idempotency-functional/src/main/java/software/amazon/lambda/powertools/e2e/Input.java

@@ -17,13 +17,6 @@
 public class Input {
     private String message;
 
-    public Input(String message) {
-        this.message = message;
-    }
-
-    public Input() {
-    }
-
     public String getMessage() {
         return message;
     }