Remove dart_noopt and related parts from the VM.

runtime/include/dart_api.h

Index: runtime/include/dart_api.h
diff --git a/runtime/include/dart_api.h b/runtime/include/dart_api.h
index 800b8376ac8f6e8fc42a8e7b74a642c0a9b1780e..1201a82fba2708b76e73979132adbc38901860e8 100644
--- a/runtime/include/dart_api.h
+++ b/runtime/include/dart_api.h
@@ -3202,15 +3202,13 @@ typedef struct {
  * reset_fields is true when we are about to create a precompilated snapshot.
  * Some fields are already been initialized as part of the loading logic, and
  * we want them to be reinitialized in the new process that will load the
- * snapshot. reset_fields is false for --noopt, which will continue running in
- * the same process.
+ * snapshot.
  *
  * \return An error handle if a compilation error or runtime error running const
  * constructors was encountered.
  */
 DART_EXPORT Dart_Handle
 Dart_Precompile(Dart_QualifiedFunctionName entry_points[],
-                bool reset_fields,
                 uint8_t* jit_feedback,
                 intptr_t jit_feedback_length);