MAINTAINERS: delete email for Shiraz Hashim

The email address bounced. I couldn't find a newer one in recent git
history (last activity 9 years ago), so delete this email entry.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20250331190731.5094-2-wsa+renesas@sang-engineering.com


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