Update authors list

Remove emails.

Author: plfiorini

AUTHORS.md

@@ -3,25 +3,13 @@ Workspace
 
 # Core Developers
 
- * Pier Luigi Fiorini <[email protected]>
- * Michael Spencer <[email protected]>
+ * Pier Luigi Fiorini
 
 # Contributors
 
-This is the list of contributors to this code base.
-
-Names are sorted by number of commits at the time of this writing.
-Commit data has been generated with:
+You can see the list of contributors to this code base,
+and the number of their commits with:
 
 ```sh
 git shortlog -s -e -n
 ```
-
-Commit counts have ben removed, since they change pretty frequently.
-
-Remember to update this file before any release is made, also make sure
-a .mailmap file is maintained if committer names and email addresses
-change over time.
-
- * Pier Luigi Fiorini <[email protected]>
- * Michael Spencer <[email protected]>