If the field type is Entity reference, choices of widget are shown in the picture. Is there any way to remove some choices from the widget list?

protected function getApplicablePluginOptions(FieldDefinitionInterface $  field_definition) {   $  options = $  this->pluginManager->getOptions($  field_definition->getType());   $  applicable_options = [];   foreach ($  options as $  option => $  label) {     $  plugin_class = DefaultFactory::getPluginClass($  option, $  this->pluginManager->getDefinition($  option));     if ($  plugin_class::isApplicable($  field_definition)) {       $  applicable_options[$  option] = $  label;     }   }   return $  applicable_options; } 

Choices are called $ options in this function which is defined in the core/modules/field_ui.