[rubygems/rubygems] Revert "Merge pull request ruby#7148 from Paul-Bo…

…b/improvement/include_response_body_on_fetch_http_error"

This reverts commit rubygems/rubygems@e5a4fd9eb617, reversing
changes made to rubygems/rubygems@c5a5363b0c98.

rubygems/rubygems@e21c45c4c3

lib/rubygems/remote_fetcher.rb

@@ -234,7 +234,7 @@ def fetch_http(uri, last_modified = nil, head = false, depth = 0)
 
       fetch_http(location, last_modified, head, depth + 1)
     else
-      raise FetchError.new("bad response #{response.message} #{response.code} #{response.body.strip}", uri)
+      raise FetchError.new("bad response #{response.message} #{response.code}", uri)
     end
   end