client: remove unused Client.HTTPClient() method

This method was introduced in [moby@5a84124] related to the (now removed)
support for "compose on kubernetes" in the CLI. This functionality extended
the CLI with endpoints that are not part of the engine API, but re-using
the HTTP-client with the same (TLS) config as the CLI itself.

While such scenarios may be something to consider in future (i.e. more easily
extend the API with custom endpoints), this method is not currently used,
but defined as part of the CLI's interface. This patch removes the method
for now, so that we can design from a clean slate in case we need this
extensibility, instead of keeping methods that were added ad-hoc around.

[moby@5a84124]: 5a84124739

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

client/client.go

@@ -381,12 +381,6 @@ func (cli *Client) DaemonHost() string {
 	return cli.host
 }
 
-// HTTPClient returns a copy of the HTTP client bound to the server
-func (cli *Client) HTTPClient() *http.Client {
-	c := *cli.client
-	return &c
-}
-
 // ParseHostURL parses a url string, validates the string is a host url, and
 // returns the parsed URL
 func ParseHostURL(host string) (*url.URL, error) {