Remove Unused `fmt::formatter<errors::Error>::parse` Method

[threeal]

This issue suggests removing the fmt::formatter<errors::Error>::parse method from this project because it appears to be unused.

errors-cpp/components/format/include/errors/format.hpp

Line 24 in 4181a2f

format_parse_context::iterator parse(format_parse_context& ctx) const;

According to fmtlib's user-defined formatting guide, it seems that we can define user-defined formatting with the format method alone, without the need for the parse method.

[threeal]

Apparently we can't remove the fmt::formatter<errors::Error>::parse method, it is indeed required. However, it appears that we can inherit the fmt::formatter<errors::Error> from fmt::formatter<std::string_view> to allow fmt::formatter<errors::Error>::parse not to be declared explicitly, as it inherits from fmt::formatter<std::string_view>.

Apparently, we can't remove the fmt::formatter<errors::Error>::parse method; it is indeed required. However, it appears that we can inherit fmt::formatter<errors::Error> from fmt::formatter<std::string_view to allow fmt::formatter<errors::Error>::parse not to be declared explicitly, as it inherits from fmt::formatter<std::string_view>.