media: staging: media: atomisp: Remove a superfluous else clause in sh_css.c

Remove a superfluous else clause in ia_css_pipe_check_format()

Signed-off-by: Martiros Shakhzadyan <vrzh@vrzh.net>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>