Remove experimental mixed language library rule (#2730)

Author: luispadron

README.md

@@ -11,7 +11,7 @@ in Bazel, and by the
 [`swift_library` rule](https://github.com/bazelbuild/rules_swift/blob/master/doc/rules.md#swift_library)
 available from [rules_swift](https://github.com/bazelbuild/rules_swift).
 
-If you are looking for an easy way to build mixed language frameworks, check out [rules_swift's `mixed_language_library`](https://github.com/bazelbuild/rules_swift/blob/master/doc/rules.md#mixed_language_library) or  [rules_ios](https://github.com/bazel-ios/rules_ios).
+If you are looking for an easy way to build mixed language frameworks, check out [rules_swift's `mixed_language_library`](https://github.com/bazelbuild/rules_swift/blob/master/doc/rules.md#mixed_language_library).
 
 ## Reference documentation
 

apple/BUILD

@@ -40,7 +40,6 @@ bzl_library(
         "//apple/internal:apple_framework_import",
         "//apple/internal:apple_universal_binary",
         "//apple/internal:apple_xcframework_import",
-        "//apple/internal:experimental_mixed_language_library",
         "//apple/internal:local_provisioning_profiles",
         "//apple/internal:xcframework_rules",
         "@bazel_features//:features",

apple/apple.bzl

@@ -32,10 +32,6 @@ load(
     _apple_dynamic_xcframework_import = "apple_dynamic_xcframework_import",
     _apple_static_xcframework_import = "apple_static_xcframework_import",
 )
-load(
-    "//apple/internal:experimental_mixed_language_library.bzl",
-    _experimental_mixed_language_library = "experimental_mixed_language_library",
-)
 load(
     "//apple/internal:local_provisioning_profiles.bzl",
     _local_provisioning_profile = "local_provisioning_profile",
@@ -56,7 +52,6 @@ apple_static_xcframework = _apple_static_xcframework
 apple_static_xcframework_import = _apple_static_xcframework_import
 apple_universal_binary = _apple_universal_binary
 apple_xcframework = _apple_xcframework
-experimental_mixed_language_library = _experimental_mixed_language_library
 local_provisioning_profile = _local_provisioning_profile
 provisioning_profile_repository = _provisioning_profile_repository
 provisioning_profile_repository_extension = _provisioning_profile_repository_extension

apple/internal/BUILD

@@ -75,19 +75,6 @@ bzl_library(
     ],
 )
 
-bzl_library(
-    name = "experimental_mixed_language_library",
-    srcs = ["experimental_mixed_language_library.bzl"],
-    visibility = [
-        "//apple:__subpackages__",
-    ],
-    deps = [
-        "//apple/internal:header_map_support",
-        "@bazel_skylib//lib:paths",
-        "@build_bazel_rules_swift//swift",
-    ],
-)
-
 bzl_library(
     name = "apple_universal_binary",
     srcs = ["apple_universal_binary.bzl"],