lib : remove all hyper code
configure: stop detecting hyper
docs: no more mention of hyper
tests: mo more special-handling of hyper builds
CI: no jobs using hyper
Closes#15120
- ignore duplicate "chunked" transfer-encodings from
a server to accomodate for broken implementations
- add test1482 and test1483
Reported-by: Mel Zuser
Fixes#13451Closes#13461