Removing the env in checked in service.

Reader will make this change as he goes through the chapter. Also
deleting un-required class.

Author: ajaym23

chapter-02/product/src/main/java/com/mycompany/product/ProductService.java

@@ -11,7 +11,7 @@
 @RestController
 public class ProductService {
 
-	@RequestMapping("/${env}product/{id}")
+	@RequestMapping("/product/{id}")
 	Product getProduct(@PathVariable("id") int id) {
 		return new Product(id);
 	}