remove useless file

src/json.hpp.re2c.rej

-diff a/src/json.hpp.re2c b/src/json.hpp.re2c	(rejected hunks)
-@@ -389,40 +389,30 @@ struct is_compatible_object_type
-         typename BasicJson::object_t, CompatibleObjectType>::value;
- };
- 
--template <bool B, class BasicJson, class CompatibleArrayType>
--struct is_compatible_array_type_impl : std::false_type {};
--
--template <class BasicJson, class CompatibleArrayType>
--struct is_compatible_array_type_impl<true, BasicJson, CompatibleArrayType>
-+template <typename BasicJson, typename T>
-+struct is_basic_json_nested_type
- {
--    static constexpr auto value =
--        not std::is_same<CompatibleArrayType,
--        typename BasicJson::iterator>::value and
--        not std::is_same<CompatibleArrayType,
--        typename BasicJson::const_iterator>::value and
--        not std::is_same<CompatibleArrayType,
--        typename BasicJson::reverse_iterator>::value and
--        not std::is_same<CompatibleArrayType,
--        typename BasicJson::const_reverse_iterator>::value and
--        not std::is_same<CompatibleArrayType,
--        typename BasicJson::array_t::iterator>::value and
--        not std::is_same<CompatibleArrayType,
--        typename BasicJson::array_t::const_iterator>::value;
-+    static auto constexpr value = std::is_same<T, typename BasicJson::iterator>::value or
-+                                  std::is_same<T, typename BasicJson::const_iterator>::value or
-+                                  std::is_same<T, typename BasicJson::reverse_iterator>::value or
-+                                  std::is_same<T, typename BasicJson::const_reverse_iterator>::value or
-+                                  std::is_same<T, typename BasicJson::json_pointer>::value;
- };
- 
- template <class BasicJson, class CompatibleArrayType>
- struct is_compatible_array_type
- {
--    // the check for CompatibleArrayType = void is done in
--    // `is_compatible_object_type`, but we need the conjunction here as well
--    static auto constexpr value = is_compatible_array_type_impl<
--        conjunction<negation<is_compatible_object_type<
-+  // TODO concept Container?
-+  // this might not make VS happy
-+    static auto constexpr value = 
-+        conjunction<negation<std::is_same<void, CompatibleArrayType>>,
-+                    negation<is_compatible_object_type<
-                         BasicJson, CompatibleArrayType>>,
-                     negation<std::is_constructible<typename BasicJson::string_t,
-                                                    CompatibleArrayType>>,
-+                    negation<is_basic_json_nested_type<BasicJson, CompatibleArrayType>>,
-                     has_value_type<CompatibleArrayType>,
--                    has_iterator<CompatibleArrayType>>::value,
--        BasicJson, CompatibleArrayType>::value;
-+                    has_iterator<CompatibleArrayType>>::value;
- };
- 
- template <bool, typename, typename>
-@@ -452,16 +442,6 @@ struct is_compatible_integer_type
-       RealIntegerType, CompatibleNumberIntegerType > ::value;
- };
- 
--template <typename BasicJson, typename T>
--struct is_basic_json_nested_type
--{
--    static auto constexpr value = std::is_same<T, typename BasicJson::iterator>::value or
--                                  std::is_same<T, typename BasicJson::const_iterator>::value or
--                                  std::is_same<T, typename BasicJson::reverse_iterator>::value or
--                                  std::is_same<T, typename BasicJson::const_reverse_iterator>::value or
--                                  std::is_same<T, typename BasicJson::json_pointer>::value;
--};
--
- // This trait checks if JSONSerializer<T>::from_json(json const&, udt&) exists
- template <template <typename, typename> class JSONSerializer, typename Json, typename T>
- struct has_from_json
-@@ -510,8 +490,6 @@ struct has_to_json
-                                       detect(std::declval<JSONSerializer<T, void>>()))>::value;
- };
- 
--template <typename Json, typename >
--
- // those declarations are needed to workaround a MSVC bug related to ADL
- // (taken from MSVC-Ranges implementation)
- void to_json();
-@@ -728,12 +706,9 @@ template <
-     typename Json, typename ArithmeticType,
-     enable_if_t<
-         std::is_arithmetic<ArithmeticType>::value and
--            not std::is_same<ArithmeticType,
--                             typename Json::number_unsigned_t>::value and
--            not std::is_same<ArithmeticType,
--                             typename Json::number_integer_t>::value and
--            not std::is_same<ArithmeticType,
--                             typename Json::number_float_t>::value and
-+            not std::is_same<ArithmeticType, typename Json::number_unsigned_t>::value and
-+            not std::is_same<ArithmeticType, typename Json::number_integer_t>::value and
-+            not std::is_same<ArithmeticType, typename Json::number_float_t>::value and
-             not std::is_same<ArithmeticType, typename Json::boolean_t>::value,
-         int> = 0>
- void from_json(Json const &j, ArithmeticType &val)