diff --git a/dumux/common/CMakeLists.txt b/dumux/common/CMakeLists.txt
index bcfa96e8ecb036ab91b0be6f37596ac706d1c47e..a10841437180b8a006893f61a2d44909ba9c4b12 100644
--- a/dumux/common/CMakeLists.txt
+++ b/dumux/common/CMakeLists.txt
@@ -26,7 +26,6 @@ loggingparametertree.hh
math.hh
monotonecubicspline.hh
numericdifferentiation.hh
-optional.hh
parameters.hh
partial.hh
pdesolver.hh
diff --git a/dumux/common/optional.hh b/dumux/common/optional.hh
deleted file mode 100644
index d9dfb678bfc257404609865a82aed1cb992f6bd2..0000000000000000000000000000000000000000
--- a/dumux/common/optional.hh
+++ /dev/null
@@ -1,154 +0,0 @@
-// -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
-// vi: set et ts=4 sw=4 sts=4:
-/*****************************************************************************
- * See the file COPYING for full copying permissions. *
- * *
- * This program is free software: you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation, either version 3 of the License, or *
- * (at your option) any later version. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU General Public License for more details. *
- * *
- * You should have received a copy of the GNU General Public License *
- * along with this program. If not, see <http://www.gnu.org/licenses/>. *
- *****************************************************************************/
-/*!
- * \file
- * \ingroup Common
- * \brief A wrapper that can either contain an object of T or be empty.
- * This might be used as a workaround for non-default constructible classes.
- * \note Replace this with std::optional when C++17 is available
- */
-#ifndef DUMUX_COMMON_OPTIONAL_HH
-#define DUMUX_COMMON_OPTIONAL_HH
-
-#warning "This header is deprecated and will be removed after release 3.2"
-#include <utility>
-
-#include <dune/common/typeutilities.hh>
-
-namespace Dumux {
-
-/*!
- * \ingroup Common
- * \brief A wrapper that can either contain an object of T or be empty
- * \tparam T Type of wrapped objects
- */
-template<class T>
-class [[deprecated("Optional is deprecated (removed after 3.2); use std::optional")]] Optional
-{
-public:
-
- Optional() :
- p_(nullptr)
- {}
-
- template<class TT, Dune::disableCopyMove<Optional, TT> = 0>
- Optional(TT&& t) :
- p_(nullptr)
- {
- emplace(std::forward<TT>(t));
- }
-
- Optional(Optional&& other)
- {
- if (other)
- p_ = new (buffer_) T(std::move(other.value()));
- else
- p_ = nullptr;
- }
-
- Optional(const Optional& other)
- {
- if (other)
- p_ = new (buffer_) T(other.value());
- else
- p_ = nullptr;
- }
-
- ~Optional()
- {
- if (operator bool())
- p_->~T();
- }
-
- template<class TT, Dune::disableCopyMove<Optional, TT> = 0 >
- Optional& operator=(TT&& t)
- {
- if (operator bool())
- *p_ = std::forward<T>(t);
- else
- p_ = new (buffer_) T(std::forward<T>(t));
- return *this;
- }
-
- Optional& operator=(const Optional& other)
- {
- if (other)
- *this = other.value();
- else if (operator bool())
- {
- p_->~T();
- p_ = nullptr;
- }
- return *this;
- }
-
- Optional& operator=(Optional&& other)
- {
- if (other)
- *this = std::move(other.value());
- else if (operator bool())
- {
- p_->~T();
- p_ = nullptr;
- }
- return *this;
- }
-
- explicit operator bool() const
- {
- return p_;
- }
-
- const T& value() const
- {
- return *p_;
- }
-
- T& value()
- {
- return *p_;
- }
-
- template< class... Args >
- void emplace(Args&&... args)
- {
- if (operator bool())
- p_->~T();
- p_ = new (buffer_) T(std::forward<Args>(args)...);
- }
-
- void release()
- {
- if (operator bool())
- {
- p_->~T();
- p_ = nullptr;
- }
- }
-
-private:
-
- alignas(T) char buffer_[sizeof(T)];
- T* p_;
-};
-
-
-} // namespace Dumux
-
-#endif // DUMUX_COMMON_OPTIONAL_HH