Removed ModelAccessValidator in favor of Forward Compatilibity Issues

- Model Access Validator causes unnecessary issues in existing integrations.
- Causes merchant to break integration if configured incorrectly.

lib/PayPal/Common/PayPalModel.php

@@ -122,7 +122,6 @@ class PayPalModel
      */
     public function __set($key, $value)
     {
-        ModelAccessorValidator::validate($this, $this->convertToCamelCase($key));
         if (!is_array($value) && $value === null) {
             $this->__unset($key);
         } else {
@@ -249,13 +248,7 @@ class PayPalModel
 
     private function assignValue($key, $value)
     {
-        // If we find the getter setter, use that, otherwise use magic method.
-        if (ModelAccessorValidator::validate($this, $this->convertToCamelCase($key))) {
-            $setter = "set" . $this->convertToCamelCase($key);
-            $this->$setter($value);
-        } else {
-            $this->__set($key, $value);
-        }
+        $this->__set($key, $value);
     }
 
     /**