Remove portfolio leftovers (#3821)

Commit 1c09572e0e2031519a103caa2a4af0d9bd34a9c5 removed the portfolio
build but there were some leftovers. This commit removes them.

1 files changed, 0 insertions, 45 deletions

diff --git a/src/smt_util/lemma_output_channel.h b/src/smt_util/lemma_output_channel.h
deleted file mode 100644
index e5c5cffe2..000000000
--- a/src/smt_util/lemma_output_channel.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/*********************                                                        */
-/*! \file lemma_output_channel.h
- ** \verbatim
- ** Top contributors (to current version):
- **   Morgan Deters, Tim King
- ** This file is part of the CVC4 project.
- ** Copyright (c) 2009-2019 by the authors listed in the file AUTHORS
- ** in the top-level source directory) and their institutional affiliations.
- ** All rights reserved.  See the file COPYING in the top-level source
- ** directory for licensing information.\endverbatim
- **
- ** \brief Mechanism for communication about new lemmas
- **
- ** This file defines an interface for use by the theory and propositional
- ** engines to communicate new lemmas to the "outside world".
- **/
-
-#include "cvc4_public.h"
-
-#ifndef CVC4__LEMMA_OUTPUT_CHANNEL_H
-#define CVC4__LEMMA_OUTPUT_CHANNEL_H
-
-#include "expr/expr.h"
-
-namespace CVC4 {
-
-/**
- * This interface describes a mechanism for the propositional and theory
- * engines to communicate with the "outside world" about new lemmas being
- * discovered.
- */
-class CVC4_PUBLIC LemmaOutputChannel {
-public:
- virtual ~LemmaOutputChannel() {}
-
- /**
-  * Notifies this output channel that there's a new lemma.
-  * The lemma may or may not be in CNF.
-  */
- virtual void notifyNewLemma(Expr lemma) = 0;
-};/* class LemmaOutputChannel */
-
-}/* CVC4 namespace */
-
-#endif /* CVC4__LEMMA_OUTPUT_CHANNEL_H */