Remove not used files:
- markdown2html is not used (we are using "Sundown" tool)
- newstroke_font_without_CJK.cpp is removed.
Due to code optimization the full font works fine without memory issues
-fix also a few very minor compil warnings
The previous converter (maddy) is still available, during some time.
We therefore have the time to choose between them.
sundown is better to convert a md text, but is written to C
maddy has a few issues to convert a md text, but is written to C++
Both have no dependency.
The help file bridget_tee_formula.md can be displayed in pcb_calculator.
For Help messages, a markdown text (with some basic html tags) is often enough
and is more easy to translate than full html texts.
jean-pierre charras