Remove some leftovers of full-codegen's generators implementation.

src/full-codegen/x87/full-codegen-x87.cc

Index: src/full-codegen/x87/full-codegen-x87.cc
diff --git a/src/full-codegen/x87/full-codegen-x87.cc b/src/full-codegen/x87/full-codegen-x87.cc
index 95167516b8e77b71a162864fdd67323ad5da61d1..daaabdb8f41be2d06adf2d6dd0de74c65f296dc0 100644
--- a/src/full-codegen/x87/full-codegen-x87.cc
+++ b/src/full-codegen/x87/full-codegen-x87.cc
@@ -130,8 +130,6 @@ void FullCodeGenerator::Generate() {
 
   { Comment cmnt(masm_, "[ Allocate locals");
     int locals_count = info->scope()->num_stack_slots();
-    // Generators allocate locals, if any, in context slots.
-    DCHECK(!IsGeneratorFunction(literal()->kind()) || locals_count == 0);
     OperandStackDepthIncrement(locals_count);
     if (locals_count == 1) {
       __ push(Immediate(isolate()->factory()->undefined_value()));