Revert "[kissmanga] workaround for CAPTCHAs (#818)"

This reverts commit 4cf3d54718.

gallery_dl/extractor/kissmanga.py

@@ -9,10 +9,9 @@
 """Extract manga-chapters and entire manga from https://kissmanga.com/"""
 
 from .common import ChapterExtractor, MangaExtractor, Extractor
-from .. import text, aes
+from .. import text, aes, exception
 from ..cache import cache
 import hashlib
-import time
 import ast
 import re
 
@@ -25,7 +24,18 @@ class RedirectMixin():
             response = Extractor.request(self, url, **kwargs)
             if not response.history or "/AreYouHuman" not in response.url:
                 return response
-            time.sleep(2)
+            if self.config("captcha", "stop") == "wait":
+                self.log.warning(
+                    "Redirect to \n%s\nVisit this URL in your browser, solve "
+                    "the CAPTCHA, and press ENTER to continue", response.url)
+                try:
+                    input()
+                except (EOFError, OSError):
+                    pass
+            else:
+                raise exception.StopExtraction(
+                    "Redirect to \n%s\nVisit this URL in your browser and "
+                    "solve the CAPTCHA to continue", response.url)
 
 
 class KissmangaBase(RedirectMixin):