net: http: Remove HTTP client and server APIs

The old legacy APIs use net-app library and as that is being
removed, then the dependencies need to be removed also.

Signed-off-by: Jukka Rissanen <[email protected]>

Author: jukkar

doc/api/networking.rst

@@ -210,12 +210,6 @@ DNS Resolve
 .. doxygengroup:: dns_resolve
    :project: Zephyr
 
-HTTP
-====
-
-.. doxygengroup:: http
-   :project: Zephyr
-
 TLS credentials
 ***************
 

doc/subsystems/networking/overview.rst

@@ -55,14 +55,6 @@ can be disabled if not needed.
   configuration options for sockets API. Secure functions for the implementation
   are provided by mbedTLS library.
 
-* **HTTP** Hypertext Transfer Protocol (RFC 2116) is supported. A simple
-  library is provided that applications can use. Sample applications are
-  implemented for :ref:`http-client-sample` and :ref:`http-server-sample`.
-  Both :ref:`http-client-sample` and :ref:`http-server-sample` can use
-  TLS (Transport Layer Security) v1.2 (RFC 5246) or SSL (Secure Sockets
-  Layer) v3.0 (RFC 6101) functionality to encrypt the network traffic.
-  The secured connections are provided by mbed library.
-
 * **MQTT** Message Queue Telemetry Transport (ISO/IEC PRF 20922) is supported.
   A sample :ref:`mqtt-publisher-sample` client application for MQTT v3.1.1 is
   implemented.