emacs: remove native-comp-compiler-options-28.patch

Since we do not deal with older Emacsen.

P.S.: We can't delete native-comp-compiler-options.patch yet, because Emacs
Macport is stuck in Emacs 29.

pkgs/applications/editors/emacs/make-emacs.nix

@@ -172,9 +172,7 @@ mkDerivation (finalAttrs: {
     ++ lib.optionals withNativeCompilation [
       (replaceVars
         (
-          if lib.versionOlder finalAttrs.version "29" then
-            ./native-comp-driver-options-28.patch
-          else if lib.versionOlder finalAttrs.version "30" then
+          if lib.versionOlder finalAttrs.version "30" then
             ./native-comp-driver-options.patch
           else
             ./native-comp-driver-options-30.patch

pkgs/applications/editors/emacs/native-comp-driver-options-28.patch

@@ -1,16 +0,0 @@
-diff --git a/lisp/emacs-lisp/comp.el b/lisp/emacs-lisp/comp.el
-index a5ab12ae38..e33e71cb55 100644
---- a/lisp/emacs-lisp/comp.el
-+++ b/lisp/emacs-lisp/comp.el
-@@ -178,7 +178,7 @@ native-comp-compiler-options
-   :type '(repeat string)
-   :version "28.1")
- 
--(defcustom native-comp-driver-options nil
-+(defcustom native-comp-driver-options '(@backendPath@)
-   "Options passed verbatim to the native compiler's back-end driver.
- Note that not all options are meaningful; typically only the options
- affecting the assembler and linker are likely to be useful.
--- 
-2.37.3
-