I\'d like to remove several packages that I\'ve installed. When I invoke package-list-packages, I notice that there is a \'d\' (mark for deletion) com
package-list-packages
d
The command package-menu-mark-delete (key 'd') followed by package-menu-execute (key 'x') worked for me.
package-menu-mark-delete
package-menu-execute
Also here is very good introduction: Package management in emacs - The good, the bad and the ugly