removed backwards compatibility for old errorpages downloader middlware

scrapy/contrib/downloadermiddleware/errorpages.py

-import warnings
-
-from scrapy.core.exceptions import IgnoreRequest
-from scrapy.utils.response import response_status_message
-
-class ErrorPagesMiddleware(object):
-    """This middleware filters out responses with status code others than 2XX
-    or defined in spider handle_httpstatus_list attribute.
-
-    TODO: move this mw to spidermiddleware and remove me
-    """
-
-    def __init__(self):
-        warnings.warn("scrapy.contrib.downloadermiddleware.errorpages.ErrorPagesMiddleware downloader middleware is deprecated - use scrapy.contrib.spidermiddleware.httperror.HttpErrorMiddleware spider middleware instead",
-            DeprecationWarning, stacklevel=2)
-
-    def process_response(self, request, response, spider):
-        status = response.status
-        if 200 <= status < 300 or status in getattr(spider, 'handle_httpstatus_list', []):
-            return response
-        else:
-            raise IgnoreRequest(response_status_message(status))
-