remove 'samecostcenter' and 'samecostcenterforcredits' form settings …

…and strings (#86)

lang/de/local_shopping_cart.php

@@ -512,11 +512,6 @@
 $string['ro'] = "Rumänien";
 $string['rounddiscounts'] = 'Rabatte runden';
 $string['rounddiscounts_desc'] = 'Rabatte auf ganze Zahlen runden (mathematisch, ohne Nachkommastellen)';
-$string['samecostcenter'] = 'Nur eine Kostenstelle pro Zahlungsvorgang';
-$string['samecostcenter_desc'] = 'Alle Items im Warenkorb müssen die selbe Kostenstelle haben.
-Items mit unterschiedlichen Kostenstellen müssen separat gebucht werden.';
-$string['samecostcenterforcredits'] = 'Guthaben nur für selbe Kostenstellen verwenden';
-$string['samecostcenterforcredits_desc'] = 'Wenn diese Einstellung aktiviert ist und einE NutzerIn Guthaben erhält, so kann dieses Guthaben nur für Artikel der selben Kostenstelle verwendet werden.';
 $string['saveinvoicenumber'] = 'Nur Rechnungsnummer speichern';
 $string['sch_paymentaccountid'] = "Wechsle das Zahlungsanbieter-Konto";
 $string['se'] = "Schweden";

lang/en/local_shopping_cart.php

@@ -581,11 +581,6 @@
 $string['ro'] = "Romania";
 $string['rounddiscounts'] = 'Round discounts';
 $string['rounddiscounts_desc'] = 'Round discounts to full numbers (no decimals)';
-$string['samecostcenter'] = 'Only one cost center per payment';
-$string['samecostcenter_desc'] = 'All payment items in shopping cart need to have the same cost center.
-Items with different cost centers need to be booked separately.';
-$string['samecostcenterforcredits'] = 'Use credits only for the same costcenter';
-$string['samecostcenterforcredits_desc'] = 'If this setting is turned on and a user receives credits, these credits can only be used for items with the same costcenter.';
 $string['saveinvoicenumber'] = 'Just save invoice number';
 $string['sch_paymentaccountid'] = "Change the payment account";
 $string['se'] = "Sweden";

settings.php

@@ -177,20 +177,7 @@
                             'shipping' => ucfirst(new lang_string('addresses:shipping', 'local_shopping_cart')),
                     ]
             ));
-    // If this setting is turned on, all payment items in shopping cart need to have the same cost center.
-    $settings->add(
-        new admin_setting_configcheckbox($componentname . '/samecostcenter',
-                get_string('samecostcenter', 'local_shopping_cart'),
-                get_string('samecostcenter_desc', 'local_shopping_cart'), 0));
-
-    // If this setting is turned on and a user receives credits, they can later only be used for items with the same costcenter.
-    $settings->add(
-        new admin_setting_configcheckbox($componentname . '/samecostcenterforcredits',
-                get_string('samecostcenterforcredits', 'local_shopping_cart'),
-                get_string('samecostcenterforcredits_desc', 'local_shopping_cart'), 0));
 
-    $samecostcenterforcredits = get_config('local_shopping_cart', 'samecostcenterforcredits');
-    if ($samecostcenterforcredits) {
         // If no costcenter is specified in credits, they can be redeemed for items from this costcenter.
         $settings->add(
                 new admin_setting_configtext(
@@ -211,7 +198,6 @@
                 PARAM_RAW
         )
         );
-    }
 
     // Setting to activate manual rebooking for cashier.
     $settings->add(