[turbofan] Remove the no-context hack for JSToNumber.

src/compiler/js-generic-lowering.cc

Index: src/compiler/js-generic-lowering.cc
diff --git a/src/compiler/js-generic-lowering.cc b/src/compiler/js-generic-lowering.cc
index 3275256a2811b24743fb89de19a1889aeba470b5..48864423146007ec632915d4ac1ad0658ca80c93 100644
--- a/src/compiler/js-generic-lowering.cc
+++ b/src/compiler/js-generic-lowering.cc
@@ -232,12 +232,6 @@ void JSGenericLowering::LowerJSToBoolean(Node* node) {
 
 void JSGenericLowering::LowerJSToNumber(Node* node) {
   Callable callable = CodeFactory::ToNumber(isolate());
-  // TODO(mstarzinger): Embedding the context this way prevents sharing of code
-  // across native contexts.
-  if (!info_context_constant_.is_set()) {
-    info_context_constant_.set(jsgraph()->HeapConstant(info()->context()));
-  }
-  node->ReplaceInput(1, info_context_constant_.get());
   ReplaceWithStubCall(node, callable, FlagsForNode(node));
 }