Drop support for Emacs 28

MODULE.bazel

@@ -50,28 +50,6 @@ use_repo(cc_configure, "local_config_cc", "local_config_cc_toolchains")
 # Non-module dependencies
 emacs_repository = use_repo_rule("//elisp/private:emacs_repository.bzl", "emacs_repository")
 
-emacs_repository(
-    name = "gnu_emacs_28.2",
-    integrity = "sha256-7iEYIjPvMjLcl7SGry2G4UBC27ZbvFNd9WLDqFgjJIg=",
-    mode = "source",
-    output = "emacs.tar.xz",
-    path = "/emacs/emacs-28.2.tar.xz",
-    strip_prefix = "emacs-28.2",
-)
-
-emacs_repository(
-    name = "gnu_emacs_windows_28.2",
-    integrity = "sha384-tUs1Z43gBYwoXJS9/dvv+ObDS7AWC4dQ4ceAAvlWOrHwjf667bGu+4d48UEuapxp",
-    mode = "release",
-    output = "emacs.zip",
-    path = "/emacs/windows/emacs-28/emacs-28.2.zip",
-    strip_prefix = "emacs-28.2",
-    target_compatible_with = [
-        "@platforms//os:windows",
-        "@platforms//cpu:x86_64",
-    ],
-)
-
 emacs_repository(
     name = "gnu_emacs_29.4",
     integrity = "sha384-1LIwxBtAr9RzK3VJ359OfOh/PN83fyfl7uckmMw+Z0mKabbOOsvy00PhXvm5wJtf",

check.ps1

@@ -36,7 +36,7 @@ function Run-Tests {
 }
 
 # All potentially supported Emacs versions.
-$versions = '28.2', '29.4', '30.1'
+$versions = '29.4', '30.1'
 
 $VerbosePreference = 'Continue'
 

elisp/BUILD

@@ -71,11 +71,6 @@ elisp_toolchain(
     use_default_shell_env = True,
 )
 
-elisp_toolchain(
-    name = "emacs_28.2",
-    emacs = "//emacs:emacs_28.2",
-)
-
 elisp_toolchain(
     name = "emacs_29.4",
     emacs = "//emacs:emacs_29.4",

emacs/BUILD

@@ -38,15 +38,6 @@ alias(
     visibility = ["//visibility:public"],
 )
 
-alias(
-    name = "emacs_28.2",
-    actual = select({
-        "@platforms//os:windows": "@gnu_emacs_windows_28.2//:emacs",
-        "//conditions:default": "@gnu_emacs_28.2//:emacs",
-    }),
-    visibility = ["//visibility:public"],
-)
-
 alias(
     name = "emacs_29.4",
     actual = select({