MAINTAINERS: remove section INTEL IOP-ADMA DMA DRIVER

MAINTAINERS: remove section INTEL IOP-ADMA DMA DRIVER

Commit cd0ab43ec91a ("dmaengine: remove iop-adma driver") removes the
driver's source code, but misses to remove the MAINTAINERS section.

Hence, ./scripts/get_maintainer.pl --self-test=patterns complains about a
broken file pattern.

Remove the INTEL IOP-ADMA DMA DRIVER section pointing to the removed
driver.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Link: https://lore.kernel.org/r/20221020082103.29218-1-lukas.bulwahn@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>