Revert "Add Linux ARM and Linux RISCV64 cross compilation gen_snapshot binaries."

This reverts commit d257c52.

Reason for revert: Attempting to make an Linux ARM cross compiler gen_snapshot breaks Windows build.

Issue: #28617
Original change's description:
> Add Linux ARM and Linux RISCV64 cross compilation gen_snapshot binaries.
>
> TEST=ci
>
> Issue: #28617
> Change-Id: Ia458f167c0e75fe9c7e31684bfaf9967499e9cda
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/437720
> Commit-Queue: Tess Strickland <[email protected]>
> Reviewed-by: Ivan Inozemtsev <[email protected]>

Issue: #28617
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Change-Id: I090e4024832c12e7e9f99c30f11a86f961d91aa1
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/438100
Auto-Submit: Tess Strickland <[email protected]>
Commit-Queue: Tess Strickland <[email protected]>
Reviewed-by: Ivan Inozemtsev <[email protected]>

Author: sstrickl

runtime/BUILD.gn

@@ -149,26 +149,6 @@ config("dart_linux_x64_config") {
   ]
 }
 
-# We need to build gen_snapshot targeting Linux ARM during a build
-# of the SDK. This configuration is used to unconditionally target
-# Linux ARM. It should not be combined with dart_os_config and dart_arch_config.
-config("dart_linux_arm_config") {
-  defines = [
-    "DART_TARGET_OS_LINUX",
-    "TARGET_ARCH_ARM",
-  ]
-}
-
-# We need to build gen_snapshot targeting Linux RISCV64 during a build
-# of the SDK. This configuration is used to unconditionally target
-# Linux RISCV64. It should not be combined with dart_os_config and dart_arch_config.
-config("dart_linux_riscv64_config") {
-  defines = [
-    "DART_TARGET_OS_LINUX",
-    "TARGET_ARCH_RISCV64",
-  ]
-}
-
 config("dart_arch_config") {
   defines = []
 

runtime/bin/BUILD.gn

@@ -109,20 +109,6 @@ build_libdart_builtin("libdart_builtin_product_linux_arm64") {
   ]
 }
 
-build_libdart_builtin("libdart_builtin_product_linux_arm") {
-  extra_configs = [
-    "..:dart_product_config",
-    "..:dart_linux_arm_config",
-  ]
-}
-
-build_libdart_builtin("libdart_builtin_product_linux_riscv64") {
-  extra_configs = [
-    "..:dart_product_config",
-    "..:dart_linux_riscv64_config",
-  ]
-}
-
 template("build_native_assets_api") {
   extra_configs = []
   if (defined(invoker.extra_configs)) {
@@ -380,33 +366,6 @@ build_gen_snapshot("gen_snapshot_product_linux_arm64") {
     "../platform:libdart_platform_precompiler_product_linux_arm64",
   ]
 }
-
-build_gen_snapshot("gen_snapshot_product_linux_arm") {
-  extra_configs = [
-    "..:dart_product_config",
-    "..:dart_linux_arm_config",
-  ]
-  extra_deps = [
-    ":gen_snapshot_dart_io_product_linux_arm",
-    ":libdart_builtin_product_linux_arm",
-    "..:libdart_precompiler_product_linux_arm",
-    "../platform:libdart_platform_precompiler_product_linux_arm",
-  ]
-}
-
-build_gen_snapshot("gen_snapshot_product_linux_riscv64") {
-  extra_configs = [
-    "..:dart_product_config",
-    "..:dart_linux_riscv64_config",
-  ]
-  extra_deps = [
-    ":gen_snapshot_dart_io_product_linux_riscv64",
-    ":libdart_builtin_product_linux_riscv64",
-    "..:libdart_precompiler_product_linux_riscv64",
-    "../platform:libdart_platform_precompiler_product_linux_riscv64",
-  ]
-}
-
 build_gen_snapshot("gen_snapshot_host_targeting_host") {
   extra_configs = [ "..:dart_maybe_product_config" ]
   extra_deps = [
@@ -509,20 +468,6 @@ build_gen_snapshot_dart_io("gen_snapshot_dart_io_product_linux_arm64") {
   ]
 }
 
-build_gen_snapshot_dart_io("gen_snapshot_dart_io_product_linux_arm") {
-  extra_configs = [
-    "..:dart_product_config",
-    "..:dart_linux_arm_config",
-  ]
-}
-
-build_gen_snapshot_dart_io("gen_snapshot_dart_io_product_linux_riscv64") {
-  extra_configs = [
-    "..:dart_product_config",
-    "..:dart_linux_riscv64_config",
-  ]
-}
-
 # A source set for the implementation of 'dart:io' library.
 template("dart_io") {
   extra_configs = []

runtime/configs.gni

@@ -63,18 +63,6 @@ _precompiler_product_linux_arm64_config =
       "$_dart_runtime:dart_linux_arm64_config",
     ] + _product + _precompiler_base
 
-_precompiler_product_linux_arm_config =
-    [
-      "$_dart_runtime:dart_config",
-      "$_dart_runtime:dart_linux_arm_config",
-    ] + _product + _precompiler_base
-
-_precompiler_product_linux_riscv64_config =
-    [
-      "$_dart_runtime:dart_config",
-      "$_dart_runtime:dart_linux_riscv64_config",
-    ] + _product + _precompiler_base
-
 _all_configs = [
   {
     suffix = "_jit"
@@ -160,20 +148,6 @@ _all_configs = [
     compiler = true
     is_product = true
   },
-  {
-    suffix = "_precompiler_product_linux_arm"
-    configs = _precompiler_product_linux_arm_config
-    snapshot = false
-    compiler = true
-    is_product = true
-  },
-  {
-    suffix = "_precompiler_product_linux_riscv64"
-    configs = _precompiler_product_linux_riscv64_config
-    snapshot = false
-    compiler = true
-    is_product = true
-  },
 ]
 
 # This template creates a target for each of the configurations listed above.

sdk/BUILD.gn

@@ -879,9 +879,7 @@ group("create_full_sdk") {
     # 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_arm",
       "../runtime/bin:gen_snapshot_product_linux_arm64",
-      "../runtime/bin:gen_snapshot_product_linux_riscv64",
       "../runtime/bin:gen_snapshot_product_linux_x64",
     ]
   }