README.md: delete outdated roadmap section

Change-Id: I61201f7797e4f81080037f47f2ec8ea27453fdd4
Reviewed-on: https://go-review.googlesource.com/c/pkgsite/+/309491
Trust: Julie Qiu <julie@golang.org>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
diff --git a/README.md b/README.md
index ca93225..28ae132 100644
--- a/README.md
+++ b/README.md
@@ -8,40 +8,6 @@
 
 You can check it out at [https://pkg.go.dev](https://pkg.go.dev).
 
-## Roadmap
-
-Pkg.go.dev [launched](https://groups.google.com/g/golang-announce/c/OW8bHSryLIc)
-in November 2019, and is currently under active development by the Go team.
-
-Here's what we are currently working on:
-
-- Design updates: We have some design changes planned for pkg.go.dev,
-  to address
-  [UX feedback](https://github.com/golang/go/issues?q=is%3Aissue+is%3Aopen+label%3Apkgsite+label%3AUX)
-  that we have received.
-  You can expect a more cohesive search and navigation experience coming soon.
-  We plan to share these designs for feedback once they are ready.
-
-- Godoc.org redirect: Longer term, we are working towards
-  [redirecting godoc.org traffic](https://blog.golang.org/pkg.go.dev-2020) to
-  pkg.go.dev. We know that there are features available on godoc.org that users
-  want to see on pkg.go.dev, and we want to ensure that we address these. We’ve
-  been keeping track of issues related to redirecting godoc.org traffic on
-  [Go issue #39144](https://golang.org/issue/39144).
-  These issues will be prioritized in the next few months. We also plan to
-  continue improving our license detection algorithm.
-
-- Search improvements: We’ll be improving our search experience based on
-  feedback in [Go issue #37810](https://golang.org/issue/37810),
-  to make it easier for users to find the dependencies they are looking for and
-  make better decisions around which ones to import.
-
-We encourage everyone to begin using [pkg.go.dev](https://pkg.go.dev) today for
-all of their needs and to
-[file feedback](https://golang.org/s/pkgsite-feedback)! You can redirect
-all of your requests from godoc.org to pkg.go.dev, by clicking
-`Always use pkg.go.dev` at the top of any page on [godoc.org](https://godoc.org).
-
 ## Issues
 
 If you want to report a bug or have a feature suggestion, please first check
@@ -51,8 +17,9 @@
 
 For answers to frequently asked questions, see [go.dev/about](https://go.dev/about).
 
-You can also chat with us on the #tools slack channel on the
-[Gophers slack](https://invite.slack.golangbridge.org).
+You can also chat with us on the
+[#pkgsite Slack channel](https://gophers.slack.com/archives/C0166L4QGJV) on the
+[Gophers Slack](https://invite.slack.golangbridge.org).
 
 ## Contributing