cql3: remove forwarding_primary_key_restrictions

I presume this header was created during code translation from C*,
but it's not used or included anywhere.

cql3/restrictions/forwarding_primary_key_restrictions.hh

@@ -1,137 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/*
- * Copyright (C) 2015 ScyllaDB
- *
- * Modified by ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla 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 Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#pragma once
-
-#include "cql3/restrictions/primary_key_restrictions.hh"
-
-namespace cql3 {
-
-namespace restrictions {
-
-/**
- * A <code>primary_key_restrictions</code> which forwards all its method calls to another
- * <code>primary_key_restrictions</code>. Subclasses should override one or more methods to modify the behavior
- * of the backing <code>primary_key_restrictions</code> as desired per the decorator pattern.
- */
-template <typename ValueType>
-class forwarding_primary_key_restrictions : public primary_key_restrictions<ValueType> {
-    using bounds_range_type = typename primary_key_restrictions<ValueType>::bounds_range_type;
-protected:
-    /**
-     * Returns the backing delegate instance that methods are forwarded to.
-     */
-    virtual ::shared_ptr<primary_key_restrictions<ValueType>> get_delegate() const = 0;
-
-public:
-    virtual bool uses_function(const sstring& ks_name, const sstring& function_name) const override {
-        return get_delegate()->uses_function(ks_name, function_name);
-    }
-
-    virtual std::vector<const column_definition*> get_column_defs() const override {
-        return get_delegate()->get_column_defs();
-    }
-
-    virtual void merge_with(::shared_ptr<restriction> restriction) override {
-        get_delegate()->merge_with(restriction);
-    }
-
-    virtual bool has_supporting_index(const secondary_index::secondary_index_manager& index_manager) const override {
-        return get_delegate()->has_supporting_index(index_manager);
-    }
-
-    virtual std::vector<bytes_opt> values(const query_options& options) const override {
-        return get_delegate()->values(options);
-    }
-
-    virtual std::vector<bytes_opt> bounds(statements::bound b, const query_options& options) const override {
-        return get_delegate()->bounds(b, options);
-    }
-
-    virtual std::vector<ValueType> values_as_keys(const query_options& options) const override {
-        return get_delegate()->values_as_keys(options);
-    }
-
-    virtual std::vector<bounds_range_type> bounds_ranges(const query_options& options) const override {
-        return get_delegate()->bounds_ranges(options);
-    }
-
-    virtual bool is_on_token() const override {
-        return get_delegate()->is_on_token();
-    }
-
-    virtual bool is_multi_column() const override {
-        return get_delegate()->is_multi_column();
-    }
-
-    virtual bool is_slice() const override {
-        return get_delegate()->is_slice();
-    }
-
-    virtual bool is_contains() const override {
-        return get_delegate()->is_contains();
-    }
-
-    virtual bool is_IN() const override {
-        return get_delegate()->is_IN();
-    }
-
-    virtual bool empty() const override {
-        return get_delegate()->empty();
-    }
-
-    virtual uint32_t size() const override {
-        return get_delegate()->size();
-    }
-
-#if 0
-    virtual void addIndexExpressionTo(List<IndexExpression> expressions, QueryOptions options) {
-        get_delegate()->addIndexExpressionTo(expressions, options);
-    }
-#endif
-
-    sstring to_string() const override {
-        return get_delegate()->to_string();
-    }
-};
-
-}
-}