gddo-server: delete unused teeproxy code

Code used to tee traffic from godoc.org to the pkgsite teeproxy is
deleted, since requests are now teed directly to pkg.go.dev.

Change-Id: Icf89a310afec7cb225e5e88be6b1265fc4bee4f5
Reviewed-on: https://go-review.googlesource.com/c/gddo/+/279037
Trust: Julie Qiu <julie@golang.org>
Run-TryBot: Julie Qiu <julie@golang.org>
Reviewed-by: Jonathan Amsterdam <jba@google.com>

gddo-server/main.go

diff --git a/gddo-server/main.go b/gddo-server/main.go
index 5cf992e..63f0c1b 100644
--- a/gddo-server/main.go
+++ b/gddo-server/main.go
@@ -1104,7 +1104,6 @@
 		})
 		return
 	}
-	teeRequestToTeeproxy(r, latency, s.isRobot(r), status)
 }
 
 func main() {

gddo-server/pkgsite.go

diff --git a/gddo-server/pkgsite.go b/gddo-server/pkgsite.go
index f209f37..e41c866 100644
--- a/gddo-server/pkgsite.go
+++ b/gddo-server/pkgsite.go
@@ -7,10 +7,6 @@
 package main
 
 import (
-	"bytes"
-	"encoding/json"
-	"fmt"
-	"log"
 	"net/http"
 	"net/url"
 	"path/filepath"
@@ -66,28 +62,6 @@
 
 }
 
-// teeRequestToTeeproxy makes a request to the teeproxy with data about the
-// godoc.org request.
-func teeRequestToTeeproxy(r *http.Request, latency time.Duration, isRobot bool, status int) {
-	var msg string
-	defer func() {
-		log.Printf("teeRequestToTeeproxy(%q): %s", r.URL.Path, msg)
-	}()
-
-	event := newGDDOEvent(r, latency, isRobot, status)
-	b, err := json.Marshal(event)
-	if err != nil {
-		msg = fmt.Sprintf("json.Marshal(%v): %v", event, err)
-		return
-	}
-	teeproxyURL := url.URL{Scheme: "https", Host: teeproxyHost}
-	if _, err := http.Post(teeproxyURL.String(), jsonMIMEType, bytes.NewReader(b)); err != nil {
-		msg = fmt.Sprintf("http.Post(%q, %q, %v): %v", teeproxyURL.String(), jsonMIMEType, event, err)
-		return
-	}
-	msg = fmt.Sprintf("request made to %q for %+v", teeproxyURL.String(), event)
-}
-
 // doNotTeeURLsToPkgGoDev are paths that should not be teed to pkg.go.dev.
 var doNotTeeURLsToPkgGoDev = map[string]bool{
 	"/-/bot":     true,
@@ -165,7 +139,6 @@
 	pkgGoDevRedirectOn     = "on"
 	pkgGoDevRedirectOff    = "off"
 	pkgGoDevHost           = "pkg.go.dev"
-	teeproxyHost           = "teeproxy-dot-go-discovery.appspot.com"
 )
 
 func shouldRedirectToPkgGoDev(req *http.Request) bool {