MAINTAINERS: Remove myself as reviewer from PPC

PPC maintainership has been a side activity for the last 2 years and
it is time to let go some of it now that Nick has taken over.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

MAINTAINERS

@@ -316,7 +316,6 @@ F: tests/tcg/openrisc/
 PowerPC TCG CPUs
 M: Nicholas Piggin <npiggin@gmail.com>
 M: Daniel Henrique Barboza <danielhb413@gmail.com>
-R: Cédric Le Goater <clg@kaod.org>
 L: qemu-ppc@nongnu.org
 S: Odd Fixes
 F: target/ppc/
@@ -468,7 +467,6 @@ F: target/mips/sysemu/
 PPC KVM CPUs
 M: Nicholas Piggin <npiggin@gmail.com>
 R: Daniel Henrique Barboza <danielhb413@gmail.com>
-R: Cédric Le Goater <clg@kaod.org>
 S: Odd Fixes
 F: target/ppc/kvm.c
 
@@ -1508,7 +1506,6 @@ F: tests/avocado/ppc_prep_40p.py
 sPAPR (pseries)
 M: Nicholas Piggin <npiggin@gmail.com>
 R: Daniel Henrique Barboza <danielhb413@gmail.com>
-R: Cédric Le Goater <clg@kaod.org>
 R: David Gibson <david@gibson.dropbear.id.au>
 R: Harsh Prateek Bora <harshpb@linux.ibm.com>
 L: qemu-ppc@nongnu.org