MAINTAINERS: delete stale entry for EOL Wind River boards

This e-mail address is no longer valid, and the boards are long
since EOL.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

MAINTAINERS

@@ -355,11 +355,6 @@ Kim Phillips <kim.phillips@freescale.com>
 
 	MPC8349EMDS	MPC8349
 
-Daniel Poirot <dan.poirot@windriver.com>
-
-	sbc8240		MPC8240
-	sbc405		PPC405GP
-
 Sergei Poselenov <sposelenov@emcraft.com>
 
 	a4m072		MPC5200