package/qjson: remove package
https://github.com/flavio/qjson/commit/6d188cb199a5248889689bd92b757cf0c17cfa27
"This project is archived. QJson was originally created when Qt3 and Qt4
lacked robust JSON support.
Since Qt5, JSON support is included in the native Qt library SDK, making
this project obsolete."
The package is broken with cmake 4 and no other package depends on it.
Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Cc: Zoltan Gyarmati <mr.zoltan.gyarmati@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>