Refactor code to remove unused code

src/main/java/seedu/cafectrl/data/Chef.java

@@ -34,6 +34,4 @@ public void cookDish() {
             ui.showToUser(e.getMessage());
         }
     }
-
-
 }

src/main/java/seedu/cafectrl/data/Sales.java

@@ -35,11 +35,6 @@ public void addOrderList(OrderList orderList) {
         orderLists.add(orderList);
     }
 
-    //TODO: @Zhong Heng, Remove this method if not used
-    public void removeOrderList(int orderListId) {
-        orderLists.remove(orderListId);
-    }
-
     public void nextDay() {
         this.daysAccounted += 1;
     }

src/main/java/seedu/cafectrl/parser/Parser.java

@@ -568,22 +568,6 @@ private static OrderList setOrderList(CurrentDate currentDate, Sales sales) {
         return sales.getOrderList(currentDay);
     }
 
-    //@@author Cazh1
-    /**
-     * Parses the given arguments string to identify task index number.
-     *
-     * @param userInput arguments string to parse as index number
-     * @param command expected String name of the command called
-     * @return the parsed index number
-     * @throws ParseException if no region of the args string could be found for the index
-     * @throws NumberFormatException the args string region is not a valid number
-     */
-    private static int parseArgsAsDisplayedIndex(String userInput, String command)
-            throws ParseException, NumberFormatException {
-        String formattedString = userInput.replace(command, "").trim();
-        return Integer.parseInt(formattedString);
-    }
-
     //@@author ShaniceTang
     /**
      * Extracts the quantity (numeric part) from a given string containing both quantity and unit.