by Kingdutch: Remove existing content view handler.

We decided not to change existing views anymore but instead create
our own overview of all analysed entities. The added update hook
should remove our field for existing installations.

We don't touch any already set-up analysis as that'll correctly
get picked up in the configuration page.

yoast_seo.install

@@ -4,3 +4,22 @@
  * @file
  * Install, update, and uninstall functions for the Real-Time SEO module.
  */
+
+use Drupal\views\Views;
+
+/**
+ * Remove the SEO status from the content overview.
+ */
+function yoast_seo_update_8201() {
+  $content_view = Views::getView('content');
+
+  if ($content_view) {
+    $display_id = 'page_1';
+
+    $handlers = $content_view->getHandlers('field', $display_id);
+    if (isset($handlers['field_yoast_seo'])) {
+      $content_view->removeHandler($display_id, 'field', 'field_yoast_seo');
+      $content_view->save();
+    }
+  }
+}
\ No newline at end of file