Bazel: Clean up unused targets.

These are no longer necessary, as we're now using
the new packaging rules everywhere.

defs.bzl

@@ -1,5 +0,0 @@
-codeql_platform = select({
-    "@platforms//os:linux": "linux64",
-    "@platforms//os:macos": "osx64",
-    "@platforms//os:windows": "win64",
-})

javascript/BUILD.bazel

@@ -36,11 +36,3 @@ codeql_pack(
     visibility = ["//visibility:public"],
     zips = {"//javascript/extractor/lib/typescript": "tools"},
 )
-
-# TODO copy for internal repository backward compatibility
-genrule(
-    name = "javascript.zip",
-    srcs = [":javascript-generic-zip"],
-    outs = ["javascript.zip"],
-    cmd = "cp $< $@",
-)

swift/BUILD.bazel

@@ -1,5 +1,4 @@
 load("@rules_pkg//pkg:mappings.bzl", "pkg_filegroup")
-load("//:defs.bzl", "codeql_platform")
 load(
     "//misc/bazel:pkg.bzl",
     "codeql_pack",
@@ -91,29 +90,3 @@ alias(
     name = "create-extractor-pack",
     actual = ":swift-installer",
 )
-
-# TODO: following rules are for internal repo backward compatibility only
-alias(
-    name = "extractor-pack-generic",
-    actual = "swift-generic",
-    visibility = ["//visibility:public"],
-)
-
-pkg_filegroup(
-    name = "resource-dir",
-    srcs = select({
-        "@platforms//os:linux": ["@swift_toolchain_linux//:resource-dir-files"],
-        "@platforms//os:macos": ["@swift_toolchain_macos//:resource-dir-files"],
-        "@platforms//os:windows": [],
-    }),
-    prefix = "resource-dir/" + codeql_platform,
-)
-
-pkg_filegroup(
-    name = "extractor-pack-arch",
-    srcs = [
-        ":resource-dir",
-        ":swift-arch",
-    ],
-    visibility = ["//visibility:public"],
-)