net/http: revert "support streaming POST content in wasm"
CL 458395 added support for streaming POST content in Wasm.
Unfortunately, this breaks requests to servers that only support HTTP/1.1.
Revert the change until a suitable fallback or opt-in strategy can be decided.
Fixes #61889
Change-Id: If53a77e1890132063b39abde867d34515d4ac2af
Reviewed-on: https://go-review.googlesource.com/c/go/+/522955
Run-TryBot: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com> Reviewed-by: Damien Neil <dneil@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Bryan Mills <bcmills@google.com> Reviewed-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>