[SDPAP-7476] Remove the unneeded default value

### Jira
https://digital-vic.atlassian.net/browse/SDPAP-7476

### Change
Remove the unneeded default value for $element['callToAction']['text’]

modules/tide_content_collection/src/Plugin/Field/FieldWidget/ContentCollectionConfigurationWidget.php

@@ -505,7 +505,6 @@ public function formElement(FieldItemListInterface $items, $delta, array $elemen
       $element['callToAction']['text'] = [
         '#type'  => 'textfield',
         '#title'  => $this->t('Text'),
-        '#default_value' => $json_object['callToAction']['text'] ?? 'View all',
         '#description' => $this->t('Display text of the link.'),
         '#states' => [
           'required' => [