remove Isolate::Current from most files starting with 'd' and 'e'

src/elements.cc

Index: src/elements.cc
diff --git a/src/elements.cc b/src/elements.cc
index 5cef12bbd216df2db3e6192607a69e5ff1efd332..3e864f471fde1946d2ddf75f6264255808984c98 100644
--- a/src/elements.cc
+++ b/src/elements.cc
@@ -492,7 +492,6 @@ static void TraceTopFrame(Isolate* isolate) {
   }
   StackFrame* raw_frame = it.frame();
   if (raw_frame->is_internal()) {
-    Isolate* isolate = Isolate::Current();
     Code* apply_builtin = isolate->builtins()->builtin(
         Builtins::kFunctionApply);
     if (raw_frame->unchecked_code() == apply_builtin) {