Merge branch '8.x-1.x' of git.drupal.org:project/node_title_validation into 8.x-1.x

node_title_validation.install

@@ -5,3 +5,10 @@
  * Node title validation install.
  */
 
+/*
+ * Implements hook_uninstall().
+ */
+function node_title_validation_uninstall() {
+  // Deleting the validation settings while uninstalling the module.
+  \Drupal::configFactory()->getEditable('node_title_validation_config.node_title_validation_settings')->delete();
+}