added meta table macro and removed unused query_macro

include/matador/sql/query_macro.hpp

@@ -1,25 +0,0 @@
-#ifndef QUERY_QUERY_HELPER_HPP
-#define QUERY_QUERY_HELPER_HPP
-
-#include "matador/utils/macro_map.hpp"
-
-#include "matador/query/table.hpp"
-#include "matador/query/table_column.hpp"
-
-#include <string>
-#include <ostream>
-
-#define FIELD(x) const matador::query::table_column x = create_column(*this, #x);
-
-#define QUERY_HELPER(C, V, ...) \
-namespace matador::query::meta {     \
-namespace internal {                      \
-class C##_table : public table {           \
-public: \
-C##_table() : table(#C) {}                            \
-MAP(FIELD, __VA_ARGS__) \
-}; }                     \
-static const internal:: C##_table V;  \
-}
-
-#endif //QUERY_QUERY_HELPER_HPP