Revert "Add gen_snapshot binaries, producing Linux ARM64/x64 snapshots"

This reverts commit e6d55c6.

Reason for revert: https://ci.chromium.org/ui/p/dart-internal/builders/ci/dart-sdk-linux-arm64-main/10098/overview

Original change's description:
> Add gen_snapshot binaries, producing Linux ARM64/x64 snapshots
>
> Inspired by `//runtime/bin:gen_snapshot_fuchsia`, required for go/dart-cross-compile.
>
> TEST=ci, build only
>
> Change-Id: Ie521c984a8f44d25f3f78d946af9416582a572dc
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/410402
> Reviewed-by: Ryan Macnak <[email protected]>
> Commit-Queue: Ivan Inozemtsev <[email protected]>

No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Change-Id: I399d1b15facc48a2e093120580c51a3b5bfce484
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/413400
Commit-Queue: Alexander Thomas <[email protected]>
Bot-Commit: Rubber Stamper <[email protected]>
Auto-Submit: Ivan Inozemtsev <[email protected]>
Reviewed-by: Alexander Thomas <[email protected]>

Author: iinozemtsev

runtime/BUILD.gn

@@ -128,26 +128,6 @@ config("dart_os_fuchsia_config") {
   defines = [ "DART_TARGET_OS_FUCHSIA" ]
 }
 
-# We need to build gen_snapshot targeting Linux ARM64 during a build
-# of the SDK. This configuration is used to unconditionally target
-# Linux ARM64. It should not be combined with dart_os_config and dart_arch_config.
-config("dart_linux_arm64_config") {
-  defines = [
-    "DART_TARGET_OS_LINUX",
-    "TARGET_ARCH_ARM64",
-  ]
-}
-
-# We need to build gen_snapshot targeting Linux ARM64 during a build
-# of the SDK. This configuration is used to unconditionally target
-# Linux ARM64. It should not be combined with dart_os_config and dart_arch_config.
-config("dart_linux_x64_config") {
-  defines = [
-    "DART_TARGET_OS_LINUX",
-    "TARGET_ARCH_X64",
-  ]
-}
-
 config("dart_arch_config") {
   defines = []
 

runtime/bin/BUILD.gn

@@ -107,20 +107,6 @@ build_libdart_builtin("libdart_builtin_product_host_targeting_host") {
   extra_configs = [ "..:dart_product_config" ]
 }
 
-build_libdart_builtin("libdart_builtin_product_linux_x64") {
-  extra_configs = [
-    "..:dart_product_config",
-    "..:dart_linux_x64_config",
-  ]
-}
-
-build_libdart_builtin("libdart_builtin_product_linux_arm64") {
-  extra_configs = [
-    "..:dart_product_config",
-    "..:dart_linux_arm64_config",
-  ]
-}
-
 template("build_native_assets_api") {
   extra_configs = []
   if (defined(invoker.extra_configs)) {
@@ -344,31 +330,6 @@ build_gen_snapshot("gen_snapshot_product_fuchsia") {
   ]
 }
 
-build_gen_snapshot("gen_snapshot_product_linux_x64") {
-  extra_configs = [
-    "..:dart_product_config",
-    "..:dart_linux_x64_config",
-  ]
-  extra_deps = [
-    ":gen_snapshot_dart_io_product_linux_x64",
-    ":libdart_builtin_product_linux_x64",
-    "..:libdart_precompiler_product_linux_x64",
-    "../platform:libdart_platform_precompiler_product_linux_x64",
-  ]
-}
-
-build_gen_snapshot("gen_snapshot_product_linux_arm64") {
-  extra_configs = [
-    "..:dart_product_config",
-    "..:dart_linux_arm64_config",
-  ]
-  extra_deps = [
-    ":gen_snapshot_dart_io_product_linux_arm64",
-    ":libdart_builtin_product_linux_arm64",
-    "..:libdart_precompiler_product_linux_arm64",
-    "../platform:libdart_platform_precompiler_product_linux_arm64",
-  ]
-}
 build_gen_snapshot("gen_snapshot_host_targeting_host") {
   extra_configs = [ "..:dart_maybe_product_config" ]
   extra_deps = [
@@ -473,20 +434,6 @@ build_gen_snapshot_dart_io("gen_snapshot_dart_io_product_fuchsia") {
   ]
 }
 
-build_gen_snapshot_dart_io("gen_snapshot_dart_io_product_linux_x64") {
-  extra_configs = [
-    "..:dart_product_config",
-    "..:dart_linux_x64_config",
-  ]
-}
-
-build_gen_snapshot_dart_io("gen_snapshot_dart_io_product_linux_arm64") {
-  extra_configs = [
-    "..:dart_product_config",
-    "..:dart_linux_arm64_config",
-  ]
-}
-
 # A source set for the implementation of 'dart:io' library.
 template("dart_io") {
   extra_configs = []

runtime/configs.gni

@@ -63,18 +63,6 @@ _precompiler_host_targeting_host_config =
 _precompiler_product_host_targeting_host_config =
     _base_host_targeting_host_config + _precompiler_base + _product
 
-_precompiler_product_linux_x64_config =
-    [
-      "$_dart_runtime:dart_config",
-      "$_dart_runtime:dart_linux_x64_config",
-    ] + _product + _precompiler_base
-
-_precompiler_product_linux_arm64_config =
-    [
-      "$_dart_runtime:dart_config",
-      "$_dart_runtime:dart_linux_arm64_config",
-    ] + _product + _precompiler_base
-
 _all_configs = [
   {
     suffix = "_jit"
@@ -160,20 +148,6 @@ _all_configs = [
     compiler = true
     is_product = false
   },
-  {
-    suffix = "_precompiler_product_linux_x64"
-    configs = _precompiler_product_linux_x64_config
-    snapshot = false
-    compiler = true
-    is_product = true
-  },
-  {
-    suffix = "_precompiler_product_linux_arm64"
-    configs = _precompiler_product_linux_arm64_config
-    snapshot = false
-    compiler = true
-    is_product = true
-  },
 ]
 
 # This template creates a target for each of the configurations listed above.

sdk/BUILD.gn

@@ -860,13 +860,6 @@ group("create_full_sdk") {
     if (dart_include_wasm_opt) {
       public_deps += [ ":copy_wasm_opt" ]
     }
-
-    # Do not include gen_snapshot binaries for cross-compilation into
-    # SDK, but add them as a dependency, so that they are built.
-    public_deps += [
-      "../runtime/bin:gen_snapshot_product_linux_arm64",
-      "../runtime/bin:gen_snapshot_product_linux_x64",
-    ]
   }
 }