Issue #3348890: Deleting un-needed files.

modules/paragraphs_inline_entity_form_example/paragraphs_inline_entity_form_example.install

-<?php
-/**
- * @file Install file.
- */
-
-use Drupal\paragraphs\Entity\ParagraphsType;
-use Drupal\Core\File\FileSystemInterface;
-
-/**
- * Implements hook_install().
- */
-function paragraphs_inline_entity_form_example_install() {
-  // Creates the paragraph icons.
-  $embed_types = [
-    'block',
-    'columns',
-    'facebook',
-    'gallery',
-    'image',
-    'instagram',
-    'text',
-    'twitter',
-    'view',
-    'youtube',
-  ];
-  // Create and set icons.
-  foreach ($embed_types as $type) {
-    $filename = $type . '_thumb.jpg';
-    $icon = \Drupal::service('extension.path.resolver')->getPath('module', 'paragraphs_inline_entity_form_example') . '/images/' . $filename;
-    $data = file_get_contents($icon);
-    if ($file = \Drupal::service('file.repository')->writeData($data, 'public://' . $filename, FileSystemInterface::EXISTS_REPLACE)) {
-      $paragraphs_type = 'paragraphs_ief_' . $type;
-      if ($paragraphs_type_entity = ParagraphsType::load($paragraphs_type)) {
-        $paragraphs_type_entity->set('icon_uuid', $file->uuid());
-        $paragraphs_type_entity->save();
-      }
-    }
-  }
-}

paragraphs_inline_entity_form.install

-<?php
-/**
- * @file Install file.
- */
-
-use Drupal\embed\Entity\EmbedButton;
-use Drupal\Core\File\FileSystemInterface;
-
-/**
- * Implements hook_install().
- */
-function paragraphs_inline_entity_form_install() {
-  // Set the default icon.
-  $icon = \Drupal::service('extension.path.resolver')->getPath('module', 'paragraphs_inline_entity_form') . '/images/paragraph_icon.png';
-  $data = file_get_contents($icon);
-  if ($file = \Drupal::service('file.repository')->writeData($data, 'public://paragraph_icon.png', FileSystemInterface::EXISTS_REPLACE)) {
-    if ($embed_button = EmbedButton::load('paragraphs_inline_entity_form')) {
-      $embed_button->set('icon', EmbedButton::convertImageToEncodedData($file->getFileUri()));
-      $embed_button->save();
-    }
-  }
-}