Move the kernel isolate snapshot out of the 'runtime' target to reduce build times on the simulator…

runtime/vm/BUILD.gn

Index: runtime/vm/BUILD.gn
diff --git a/runtime/vm/BUILD.gn b/runtime/vm/BUILD.gn
index 5683aee422e3bc693aeeac16749e31d112c5d643..cada1133bab6c393f9c40b1002a1134355601b92 100644
--- a/runtime/vm/BUILD.gn
+++ b/runtime/vm/BUILD.gn
@@ -56,22 +56,6 @@ static_library("libdart_vm") {
   include_dirs = [ ".." ]
 }
 
-static_library("libdart_vm_noopt") {
-  configs += [
-    "..:dart_config",
-    "..:dart_maybe_product_config",
-    "..:dart_precompiler_config",
-    "..:dart_maybe_precompiled_runtime_config",
-  ]
-  public_configs = [ ":libdart_vm_config" ]
-  set_sources_assignment_filter([
-                                  "*_test.cc",
-                                  "*_test.h",
-                                ])
-  sources = vm_sources_list
-  include_dirs = [ ".." ]
-}
-
 static_library("libdart_vm_precompiled_runtime") {
   configs += [
     "..:dart_config",