Pull request 1717: remove-client2

Merge in DNS/adguard-home from remove-client2 to master

Squashed commit of the following:

commit 0a0923494b0d1003e4f02f3a5f93d5248f0f2ded
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Fri Jan 20 17:14:29 2023 +0300

    all: rm old experimental beta (dir client2/)

    This project was unfortunately abandoned.  v0.108.0 will have a
    different front-end and new APIs.

internal/home/middlewares.go

@@ -75,18 +75,3 @@ func limitRequestBody(h http.Handler) (limited http.Handler) {
 		h.ServeHTTP(w, rr)
 	})
 }
-
-// wrapIndexBeta returns handler that deals with new client.
-func (web *Web) wrapIndexBeta(http.Handler) (wrapped http.Handler) {
-	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		h, pattern := Context.mux.Handler(r)
-		switch pattern {
-		case "/":
-			web.handlerBeta.ServeHTTP(w, r)
-		case "/install.html":
-			web.installerBeta.ServeHTTP(w, r)
-		default:
-			h.ServeHTTP(w, r)
-		}
-	})
-}