Remove Jack Bond-Preston as CMake Build Definitions code owner

Signed-off-by: Javier Almansa Sobrino <javier.almansasobrino@arm.com>
Change-Id: I542ec3cf1bb929a5656dda6dbad816b69837c646

docs/about/maintainers.rst

@@ -64,8 +64,6 @@ Build Definitions for CMake Build System
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 :M: Javier Almansa Sobrino <Javier.AlmansaSobrino@arm.com>
 :G: `javieralso-arm`_
-:M: Jack Bond-Preston <Jack.Bond-Preston@arm.com>
-:G: `jackbondpreston-arm`_
 :F: /
 
 Software Delegated Exception Interface (SDEI)
@@ -648,6 +646,5 @@ Build system
 .. _madhukar-Arm: https://github.com/madhukar-Arm
 .. _john-powell-arm: https://github.com/john-powell-arm
 .. _raghuncstate: https://github.com/raghuncstate
-.. _jackbondpreston-arm: https://github.com/jackbondpreston-arm
 
 .. _Project Maintenance Process: https://developer.trustedfirmware.org/w/collaboration/project-maintenance-process/