staging: iio: remove iio-trig-bfin-timer driver

The blackfin architecture is getting removed, so the timer trigger
driver is now obsolete. Since this is the last remaining iio trigger
driver in staging, I'm removing the entire directory.

I'm not sure about the other staging iio drivers though: almost
all of them are for Analog Devices devices like this one. They
are likely used along with blackfin SoCs, but could easily be
used on any others as well.

It might be time to consider whether they should be removed, but
it doesn't feel like a decision that I should be making.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
7 files changed