[fix] Rename ccengine engine to openverse

The CC engine was merged with WordPress and renamed to Openverse

Source: https://wordpress.org/news/2021/05/welcome-to-openverse/

searx/engines/ccengine.py

@@ -1,54 +0,0 @@
-# SPDX-License-Identifier: AGPL-3.0-or-later
-"""
-
- Creative Commons search engine (Images)
-
-"""
-
-from json import loads
-from urllib.parse import urlencode
-
-
-about = {
-    "website": 'https://wordpress.org/openverse/',
-    "wikidata_id": None,
-    "official_api_documentation": 'https://api.openverse.engineering/v1/',
-    "use_official_api": True,
-    "require_api_key": False,
-    "results": 'JSON',
-}
-
-categories = ['images']
-
-paging = True
-nb_per_page = 20
-
-base_url = 'https://api.openverse.engineering/v1/images?'
-search_string = '&page={page}&page_size={nb_per_page}&format=json&{query}'
-
-
-def request(query, params):
-
-    search_path = search_string.format(query=urlencode({'q': query}), nb_per_page=nb_per_page, page=params['pageno'])
-
-    params['url'] = base_url + search_path
-
-    return params
-
-
-def response(resp):
-    results = []
-
-    json_data = loads(resp.text)
-
-    for result in json_data['results']:
-        results.append(
-            {
-                'url': result['foreign_landing_url'],
-                'title': result['title'],
-                'img_src': result['url'],
-                'template': 'images.html',
-            }
-        )
-
-    return results