Removed Deprecated Getter and Setters

- Removed Deprecated Getter Setters from all Model Classes
- All Camelcase getters and setters are removed. Please use first letter uppercase syntax
- E.g. instead of using get_notify_url(), use getNotifyUrl() instead

lib/PayPal/Api/InvoiceItem.php

@@ -113,31 +113,6 @@ class InvoiceItem extends PayPalModel
         return $this->unit_price;
     }
 
-    /**
-     * Unit price of the item. Range of -999999.99 to 999999.99.
-     *
-     * @deprecated Instead use setUnitPrice
-     *
-     * @param \PayPal\Api\Currency $unit_price
-     * @return $this
-     */
-    public function setUnit_price($unit_price)
-    {
-        $this->unit_price = $unit_price;
-        return $this;
-    }
-
-    /**
-     * Unit price of the item. Range of -999999.99 to 999999.99.
-     * @deprecated Instead use getUnitPrice
-     *
-     * @return \PayPal\Api\Currency
-     */
-    public function getUnit_price()
-    {
-        return $this->unit_price;
-    }
-
     /**
      * Tax associated with the item.
      *