Undo submitting comment via JS if the SSE is down
Revert "Show the comment on issues in JS if the SSE isn't responding"
This partially reverts commit e321843d1d587dca215fd079ef93e26a0a0f5c5e
This reverts commit 485acb73b65512656b792290e8b0ddd044629d9b.
Fixes https://pagure.io/pagure/issue/3879
Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr>