Resolved merge conflicts during rebase.

src/Plugin/Field/FieldWidget/InlineEntityFormComplex.php

@@ -224,20 +224,6 @@ class InlineEntityFormComplex extends InlineEntityFormBase implements ContainerF
       $summary[] = $this->t('Automatically open creation form');
     }
 
-    switch ($this->getSetting('removed_reference')) {
-      case self::REMOVED_KEEP:
-        $summary[] = $this->t('Always keep unreferenced @label.', ['@label' => $labels['plural']]);
-        break;
-
-      case self::REMOVED_OPTIONAL:
-        $summary[] = $this->t('Let users decide whether to keep or delete unreferenced @label.', ['@label' => $labels['plural']]);
-        break;
-
-      case self::REMOVED_DELETE:
-        $summary[] = $this->t('Always delete unreferenced @label.', ['@label' => $labels['plural']]);
-        break;
-    }
-
     return $summary;
   }