std.http.Client: don't send TLS close_notify

It appears to be implemented incorrectly in the wild and causes the read
connection to be closed even though that is a direct violation of RFC
8446 Section 6.1.

The writeEnd function variants are still there, ready to be used.
3127bd79fbAndrew Kelley committed on 1/2/2023, 11:57:16 PMparent611a1fd
1 file changedLine totals unavailable