Remove default features of http-types

[omid]

No description provided.

[heaths]

Please provide a reason as to why this change is necessary or recommended.

[omid]

@heaths I'm not familiar with the source code that much, so my change can break the lib, but at least the tests I run passed.

I use azure sdk in a project and saw useless (to me!) and old dependencies which are attached to the not-actively-maintained http-types. And this change is to avoid including them, if I understood correctly.

[omid]

OK, now I investigated more :/

http-types has some 3-year-old changes on master which are not yet released! So my change here is meaningless and wrong!

Rust ecosystem should think about this old http-types package with ~10M downloads!

Thanks @heaths

[svix-jplatte]

Related: #1644