Remove confusing (and apparently wrong) DCHECK from ScopeInfo::Create

src/ast/scopeinfo.cc

Index: src/ast/scopeinfo.cc
diff --git a/src/ast/scopeinfo.cc b/src/ast/scopeinfo.cc
index 336f96ead18a7bfdca6a386b5f71527ef9a4aae3..7f69c931840698861ba327d9e43a6dba5d2f647b 100644
--- a/src/ast/scopeinfo.cc
+++ b/src/ast/scopeinfo.cc
@@ -197,9 +197,7 @@ Handle<ScopeInfo> ScopeInfo::Create(Isolate* isolate, Zone* zone,
 
   DCHECK(index == scope_info->length());
   DCHECK(scope->num_parameters() == scope_info->ParameterCount());
-  DCHECK(scope->num_heap_slots() == scope_info->ContextLength() ||
-         (scope->num_heap_slots() == kVariablePartIndex &&
-          scope_info->ContextLength() == 0));
+  DCHECK(scope->num_heap_slots() == scope_info->ContextLength());
   return scope_info;
 }