ISTWCMS-5878 Remove block.inc file which is related to gesso only

includes/block.inc

-<?php
-
-/**
- * @file
- * Provides the necessary hooks for the block theme suggestions.
- */
-
-use Drupal\block_content\BlockContentInterface;
-
-/**
- * Implements hook_theme_suggestions_HOOK_alter().
- */
-function gesso_theme_suggestions_block_alter(array &$suggestions, array $variables) {
-  $content = $variables['elements']['content'];
-  if (isset($content['#block_content']) and $content['#block_content'] instanceof BlockContentInterface) {
-    $suggestions = [];
-    $bundle = $content['#block_content']->bundle();
-    $view_mode = $content['#view_mode'];
-    $suggestions[] = 'block__' . $bundle;
-    $suggestions[] = 'block__' . $view_mode;
-    $suggestions[] = 'block__' . $bundle . '__' . $view_mode;
-    if (!empty($variables['elements']['#id'])) {
-      $suggestions[] = 'block__' . $variables['elements']['#id'];
-    }
-  }
-}