automatically detect and bypass cloudflare challenge pages

TODO: cache and re-apply cfclearance cookies

gallery_dl/extractor/readcomiconline.py

@@ -9,7 +9,7 @@
 """Extract comic-issues and entire comics from https://readcomiconline.to/"""
 
 from .common import ChapterExtractor, MangaExtractor
-from .. import text, cloudflare
+from .. import text
 import re
 
 
@@ -21,8 +21,6 @@ class ReadcomiconlineBase():
     archive_fmt = "{issue_id}_{page}"
     root = "https://readcomiconline.to"
 
-    request = cloudflare.request_func
-
 
 class ReadcomiconlineIssueExtractor(ReadcomiconlineBase, ChapterExtractor):
     """Extractor for comic-issues from readcomiconline.to"""