Revert "[VM/dartdev] Switch dartdev to use an AOT runtime."

This reverts commit 5399dbf6f6.

Reason for revert : Flutter rolls are failing

TEST=ci

Change-Id: I76fede849705514496adbc2ab7f6c262de4103ca
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/439661
Reviewed-by: Jason Simmons <jsimmons@google.com>
Commit-Queue: Siva Annamalai <asiva@google.com>

utils/dartdev/BUILD.gn

@@ -3,34 +3,8 @@
 # BSD-style license that can be found in the LICENSE file.
 
 import("../../build/dart/copy_tree.gni")
-import("../aot_snapshot.gni")
 import("../application_snapshot.gni")
 
-group("dartdev_aot") {
-  public_deps = [
-    ":copy_prebuilt_devtools",
-    ":dartdev_aot_snapshot",
-  ]
-}
-
-aot_snapshot("dartdev_aot_profile_snapshot") {
-  main_dart = "../../pkg/dartdev/bin/dartdev.dart"
-  output = "$root_out_dir/dartdev_aot_profile.dart.snapshot"
-}
-
-aot_snapshot("dartdev_aot_snapshot") {
-  main_dart = "../../pkg/dartdev/bin/dartdev.dart"
-  output = "$root_out_dir/dartdev_aot.dart.snapshot"
-
-  # dart has dart_product_config applied to it,
-  # so it is built in product mode in both release and
-  # product builds, and is only built in debug mode in debug
-  # builds. The following line ensures that the dart
-  # and dartdev_aot snapshot in an SDK build are
-  # always compatible with each other.
-  force_product_mode = !dart_debug
-}
-
 group("dartdev") {
   public_deps = [
     ":copy_dartdev_snapshot",
@@ -38,12 +12,6 @@ group("dartdev") {
   ]
 }
 
-application_snapshot("generate_dartdev_snapshot") {
-  main_dart = "../../pkg/dartdev/bin/dartdev.dart"
-  training_args = [ "--help" ]
-  output = "$root_gen_dir/dartdev.dart.snapshot"
-}
-
 copy("copy_dartdev_snapshot") {
   visibility = [ ":dartdev" ]
   public_deps = [ ":generate_dartdev_snapshot" ]
@@ -51,11 +19,14 @@ copy("copy_dartdev_snapshot") {
   outputs = [ "$root_out_dir/dartdev.dart.snapshot" ]
 }
 
+application_snapshot("generate_dartdev_snapshot") {
+  main_dart = "../../pkg/dartdev/bin/dartdev.dart"
+  training_args = [ "--help" ]
+  output = "$root_gen_dir/dartdev.dart.snapshot"
+}
+
 copy_tree("copy_prebuilt_devtools") {
-  visibility = [
-    ":dartdev",
-    ":dartdev_aot",
-  ]
+  visibility = [ ":dartdev" ]
   source = "../../third_party/devtools/web"
   dest = "$root_out_dir/devtools"
   exclude = "{}"