Delete redundant Book class constructor

Signed-off-by: Pekka Helenius <fincer89@hotmail.com>

bookstore/src/main/java/com/fjordtek/bookstore/model/Book.java

@@ -230,15 +230,6 @@ public class Book {
 
 	public Book() {}
 
-	public Book(String title, String author, int year, String isbn, double price) {
-		// super();
-	    this.title    = title;
-	    this.author   = author;
-	    this.year     = year;
-	    this.isbn     = isbn;
-	    this.price    = price;
-	}
-
 	public Book(String title, String author, int year, String isbn, double price, Category category) {
 		// super();
 	    this.title    = title;