benchs/langages: remove old&broken benches

Signed-off-by: Jean Privat <jean@pryen.org>
benchs/lang: factorize language functions

Signed-off-by: Jean Privat <jean@pryen.org>
benchs/lang: reactivate ugly loop

Signed-off-by: Jean Privat <jean@pryen.org>
benchs/lang: increase timout to 5min

Signed-off-by: Jean Privat <jean@pryen.org>