website: Remove reference to the 'roadmap'

This document is out of date and no longer relevant. This has been
replaced by pointing users towards the Jira issue tracker.

Change-Id: I1b53c876483d3f4e2b82d3a3058f109ff94c4c7c
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-website/+/55688
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: Jason Lowe-Power <power.jg@gmail.com>
diff --git a/_pages/governance.md b/_pages/governance.md
index d456f2d..d6cd03b 100644
--- a/_pages/governance.md
+++ b/_pages/governance.md
@@ -11,7 +11,8 @@
 ---
 gem5 is a meritocratic, consensus-based community project. Anyone with an interest in the project can join the community, contribute to the project design and participate in the decision-making process. Historically, gem5 development has been carried out both in industry and in academia. This document describes how that participation takes place and how to set about earning merit within the project community.
 
-The document is broken into a number of sections. Philosophy describes the ideas behind the gem5 community. The Roadmap section points to the roadmap document for gem5’s development. Users and Responsibilities describes the classes of users that use gem5, the types of gem5 contributors, and their responsibilities. Support describes how the community supports users and the Contribution process describes how to contribute. Finally, the Decision Process describes how decisions are made and then we conclude.
+The document is broken into a number of sections. Philosophy describes the ideas behind the gem5 community. The Jira section points
+users towards our Jira issue tracker for gem5's development. Users and Responsibilities describes the classes of users that use gem5, the types of gem5 contributors, and their responsibilities. Support describes how the community supports users and the Contribution process describes how to contribute. Finally, the Decision Process describes how decisions are made and then we conclude.
 
 # Philosophy
 ---
@@ -26,9 +27,12 @@
 
 Additionally, the gem5 community is committed to openness, transparency, and inclusiveness. Participants in the gem5 community of all backgrounds should feel welcome and encouraged to contribute.
 
-# gem5 Roadmap
+# gem5 Jira issue tracker
 ---
-The roadmap for gem5 can be found on [Roadmap](https://docs.google.com/document/d/1fv01HavfkIIqfcgZoKUpojkUKkWujxspRCcvS5cTfkk/edit?usp=sharing) page. The roadmap document details the short and long term goals for the gem5 software. Users of all types are encouraged to contribute to this document and shape the future of gem5\. Users are especially encouraged to update the roadmap (and get consensus) before submitting large changes to gem5.
+The [gem5 Jira issue tracker](https://gem5.atlassian.net) lists known bugs, feature and improvement suggestions.
+Those wishing to work on gem5 may browse issues and request assignment to the tasks they believe they can undertake.
+Users of all types are encouraged to open their own bug reports or put forward improvement suggestions.
+While contributions to gem5 may be made without first being logged in our Jira tracker, Jira is the project's primary way of prioritizing and managing work items for upcoming releases.
 
 # Roles And Responsibilities
 ---