Remove unused function

CRM/Core/Payment/MJWTrait.php

@@ -302,46 +302,6 @@ trait CRM_Core_Payment_MJWTrait {
     return isset($this->_paymentProcessor['is_test']) && $this->_paymentProcessor['is_test'] ? 1 : 0;
   }
 
-  /**
-   * Format the fields for the payment processor.
-   * @fixme Copied from CiviCRM Core 5.13. We should remove this when all forms submit using this function (eg updateSubscriptionBillingInfo)
-   *
-   * In order to pass fields to the payment processor in a consistent way we add some renamed
-   * parameters.
-   *
-   * @param array $fields
-   *
-   * @return array
-   */
-  private function formatParamsForPaymentProcessor($fields) {
-    $billingLocationId = CRM_Core_BAO_LocationType::getBilling();
-    // also add location name to the array
-    $this->_params["address_name-{$billingLocationId}"] = ($this->_params['billing_first_name'] ?? '') . ' ' . ($this->_params['billing_middle_name'] ?? '') . ' ' . ($this->_params['billing_last_name'] ?? '');
-    $this->_params["address_name-{$billingLocationId}"] = trim($this->_params["address_name-{$billingLocationId}"]);
-    // Add additional parameters that the payment processors are used to receiving.
-    if (!empty($this->_params["billing_state_province_id-{$billingLocationId}"])) {
-      $this->_params['state_province'] = $this->_params["state_province-{$billingLocationId}"] = $this->_params["billing_state_province-{$billingLocationId}"] = CRM_Core_PseudoConstant::stateProvinceAbbreviation($this->_params["billing_state_province_id-{$billingLocationId}"]);
-    }
-    if (!empty($this->_params["billing_country_id-{$billingLocationId}"])) {
-      $this->_params['country'] = $this->_params["country-{$billingLocationId}"] = $this->_params["billing_country-{$billingLocationId}"] = CRM_Core_PseudoConstant::countryIsoCode($this->_params["billing_country_id-{$billingLocationId}"]);
-    }
-
-    [$hasAddressField, $addressParams] = CRM_Contribute_BAO_Contribution::getPaymentProcessorReadyAddressParams($this->_params, $billingLocationId);
-    if ($hasAddressField) {
-      $this->_params = array_merge($this->_params, $addressParams);
-    }
-
-    $nameFields = ['first_name', 'middle_name', 'last_name'];
-    foreach ($nameFields as $name) {
-      $fields[$name] = 1;
-      if (array_key_exists("billing_$name", $this->_params)) {
-        $this->_params[$name] = $this->_params["billing_{$name}"];
-        $this->_params['preserveDBName'] = TRUE;
-      }
-    }
-    return $fields;
-  }
-
   /**
    * Handle an error and notify the user
    *