libgnt/libgnt

Deprecate gnt_text_format_flag_to_chtype.
release-2.x.y
2020-07-30, Elliott Sales de Andrade
24e7edbf6b0d
Deprecate gnt_text_format_flag_to_chtype.

It's not used by Finch, and leaks internals.

Testing Done:
Compile only, search on Finch source code.

Reviewed at https://reviews.imfreedom.org/r/53/
#include <ncurses.h>
int main()
{
int ch;
initscr();
noecho();
cbreak();
refresh();
WINDOW *win = newpad(20, 30);
box(win, 0, 0);
prefresh(win, 0, 0, 0, 0, 19, 29);
doupdate();
while ((ch = getch())) {
printw("%d ", ch);
refresh();
}
endwin();
return 0;
}