MAINTAINERS: remove Noam Dagan from AMAZON ETHERNET

Noam Dagan was added to ENA reviewers in 2021, we have not seen
a single email from this person to any list, ever (according to lore).
Git history mentions the name in 2 SoB tags from 2020.

Acked-by: Arthur Kiyanovski <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: kuba-moo

MAINTAINERS

@@ -949,7 +949,6 @@ AMAZON ETHERNET DRIVERS
 M:	Shay Agroskin <[email protected]>
 M:	Arthur Kiyanovski <[email protected]>
 R:	David Arinzon <[email protected]>
-R:	Noam Dagan <[email protected]>
 R:	Saeed Bishara <[email protected]>
 L:	[email protected]
 S:	Supported