staging: comedi: don't clear 'data' on (*insn_read) timeout

It's not necessary to clear the returned data pointer when an (*insn_read)
times out. For aesthetics, remove all of these in the drivers.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --cc drivers/staging/comedi/drivers/adl_pci9111.c
Simple merge

diff --cc drivers/staging/comedi/drivers/adl_pci9118.c
Simple merge

diff --cc drivers/staging/comedi/drivers/adv_pci1710.c
Simple merge

diff --cc drivers/staging/comedi/drivers/dyna_pci10xx.c
Simple merge

diff --cc drivers/staging/comedi/drivers/icp_multi.c
Simple merge

diff --cc drivers/staging/comedi/drivers/pcl816.c
Simple merge