net/http: remove some obsolete TODOs

We've decided to leave logging to third-parties (there are too
many formats), which others have done.

And we can't change the behavior of the various response
fields at this point anyway. Plus I argue they're correct and
match their documention.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/8391043

src/pkg/net/http/response_test.go

@@ -112,8 +112,8 @@ var respTests = []respTest{
 			ProtoMinor: 0,
 			Request:    dummyReq("GET"),
 			Header: Header{
-				"Connection":     {"close"}, // TODO(rsc): Delete?
-				"Content-Length": {"10"},    // TODO(rsc): Delete?
+				"Connection":     {"close"},
+				"Content-Length": {"10"},
 			},
 			Close:         true,
 			ContentLength: 10,
@@ -170,7 +170,7 @@ var respTests = []respTest{
 			Request:          dummyReq("GET"),
 			Header:           Header{},
 			Close:            false,
-			ContentLength:    -1, // TODO(rsc): Fix?
+			ContentLength:    -1,
 			TransferEncoding: []string{"chunked"},
 		},
 

src/pkg/net/http/server.go

@@ -4,9 +4,6 @@
 
 // HTTP server.  See RFC 2616.
 
-// TODO(rsc):
-//	logging
-
 package http
 
 import (