further cleanup of invert

samukweku · samukweku · commit 680ba1c9f947 · 2023-03-31T12:55:30.000+11:00
diff --git a/src/core/expr/funary/uinvert.cc b/src/core/expr/funary/uinvert.cc
@@ -53,7 +53,6 @@ class FExpr_UInvert : public FExpr_FuncUnary {
   
     Column evaluate1(Column&& col) const override{
       SType stype = col.stype();
-      Column col_out;
 
       switch (stype) {
         case SType::VOID: 
