gnu: Remove a couple of old deprecated package aliases.

* gnu/packages/emacs.scm (geiser-next, paredit/old-name): Remove.

gnu/packages/emacs.scm

@@ -351,10 +351,6 @@ implementation, Emacs and, ultimately, the schemer, giving them access to live
 metadata.")
     (license license:bsd-3)))
 
-(define-public geiser-next
-  ;; This has become "geiser".
-  (deprecated-package "geiser-next" geiser))
-
 (define-public paredit
   (package
     (name "emacs-paredit")
@@ -380,9 +376,6 @@ for those who may want transient periods of unbalanced parentheses, such as
 when typing parentheses directly or commenting out code line by line.")
     (license license:gpl3+)))
 
-(define-public paredit/old-name
-  (deprecated-package "paredit" paredit))
-
 (define-public git-modes
   (package
     (name "emacs-git-modes")