powerpc: Drop XILINX MAINTAINERS entry

This has been orphaned for ~7 years, remove it.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Grant Likely <grant.likely@arm.com>
Link: https://lore.kernel.org/r/20200224233146.23734-5-mpe@ellerman.id.au

MAINTAINERS

@@ -9667,12 +9667,6 @@ L:	linuxppc-dev@lists.ozlabs.org
 S:	Maintained
 F:	arch/powerpc/platforms/8xx/
 
-LINUX FOR POWERPC EMBEDDED XILINX VIRTEX
-L:	linuxppc-dev@lists.ozlabs.org
-S:	Orphan
-F:	arch/powerpc/*/*virtex*
-F:	arch/powerpc/*/*/*virtex*
-
 LINUX KERNEL DUMP TEST MODULE (LKDTM)
 M:	Kees Cook <keescook@chromium.org>
 S:	Maintained