api: fix pprof-address usage

those handlers already added by init functions

Signed-off-by: Alexander Morozov <lk4d4@docker.com>

api/http/pprof/pprof.go

@@ -1,8 +1,7 @@
 package pprof
 
 import (
-	"expvar"
+	_ "expvar"
-	"fmt"
 	"net/http"
 	"net/http/pprof"
 
@@ -12,11 +11,6 @@ import (
 func Enable(address string) {
 	http.Handle("/", http.RedirectHandler("/debug/pprof", http.StatusMovedPermanently))
 
-	http.Handle("/debug/vars", http.HandlerFunc(expVars))
-	http.Handle("/debug/pprof/", http.HandlerFunc(pprof.Index))
-	http.Handle("/debug/pprof/cmdline", http.HandlerFunc(pprof.Cmdline))
-	http.Handle("/debug/pprof/profile", http.HandlerFunc(pprof.Profile))
-	http.Handle("/debug/pprof/symbol", http.HandlerFunc(pprof.Symbol))
 	http.Handle("/debug/pprof/block", pprof.Handler("block"))
 	http.Handle("/debug/pprof/heap", pprof.Handler("heap"))
 	http.Handle("/debug/pprof/goroutine", pprof.Handler("goroutine"))
@@ -25,18 +19,3 @@ func Enable(address string) {
 	go http.ListenAndServe(address, nil)
 	logrus.Debug("pprof listening in address %s", address)
 }
-
-// Replicated from expvar.go as not public.
-func expVars(w http.ResponseWriter, r *http.Request) {
-	first := true
-	w.Header().Set("Content-Type", "application/json; charset=utf-8")
-	fmt.Fprintf(w, "{\n")
-	expvar.Do(func(kv expvar.KeyValue) {
-		if !first {
-			fmt.Fprintf(w, ",\n")
-		}
-		first = false
-		fmt.Fprintf(w, "%q: %s", kv.Key, kv.Value)
-	})
-	fmt.Fprintf(w, "\n}\n")
-}