BAEL-5852: remove comments

core-java-modules/core-java-lang-oop-generics/src/main/java/com/baeldung/holder/SupplierService.java

@@ -2,8 +2,6 @@ package com.baeldung.holder;
 
 public class SupplierService {
     public void getSupplierByZipCode(String zip, Holder<Boolean> resultHolder) {
-        // Let's pretend we did some work here to get the supplier
-        // And let's say all zip codes starting with "9" are valid, just for this example
         if (zip.startsWith("9")) {
             resultHolder.value = true;
         } else {