Maintainers: Remove Ard Biesheuvel from all packages

As a Tianocore maintainer, I am responsible for the packages that I
maintain, and am therefore expected to respond in a timely manner to
pull requests affecting those packages. With the updated GitHub-based
workflow, this now results in daily GitHub spam inviting me to respond
to each PR as they are created by the respective authors.

However, I strongly feel that with responsibility should come with
delegated authority as well, and this has been stripped away over the
past couple of years. When other maintainers fail to respond (which has
become more common recently), or when there are glitches in the CI, I no
longer have any means to take charge and correct the situation.

The upshot is that I am struggling to do my work as a maintainer,
spending 90% of my time dealing with GitHub CI technicalities, or being
blocked on other work that is completely ignored by the other
maintainers.

This is a waste of my time, and therefore, of my employer's money, so I
feel I can no longer justify my involvement. I am therefore stepping
down as a maintainer.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>

Maintainers.txt

@@ -85,7 +85,6 @@ ARM, AARCH64
 F: */AArch64/
 F: */Arm/
 M: Leif Lindholm <quic_llindhol@quicinc.com> [leiflindholm]
-M: Ard Biesheuvel <ardb+tianocore@kernel.org> [ardbiesheuvel]
 M: Sami Mujawar <sami.mujawar@arm.com> [samimujawar]
 
 RISCV64
@@ -138,19 +137,16 @@ ArmPkg
 F: ArmPkg/
 W: https://github.com/tianocore/tianocore.github.io/wiki/ArmPkg
 M: Leif Lindholm <quic_llindhol@quicinc.com> [leiflindholm]
-M: Ard Biesheuvel <ardb+tianocore@kernel.org> [ardbiesheuvel]
 R: Sami Mujawar <sami.mujawar@arm.com> [samimujawar]
 
 ArmPlatformPkg
 F: ArmPlatformPkg/
 W: https://github.com/tianocore/tianocore.github.io/wiki/ArmPlatformPkg
 M: Leif Lindholm <quic_llindhol@quicinc.com> [leiflindholm]
-M: Ard Biesheuvel <ardb+tianocore@kernel.org> [ardbiesheuvel]
 
 ArmVirtPkg
 F: ArmVirtPkg/
 W: https://github.com/tianocore/tianocore.github.io/wiki/ArmVirtPkg
-M: Ard Biesheuvel <ardb+tianocore@kernel.org> [ardbiesheuvel]
 R: Leif Lindholm <quic_llindhol@quicinc.com> [leiflindholm]
 R: Sami Mujawar <sami.mujawar@arm.com> [samimujawar]
 R: Gerd Hoffmann <kraxel@redhat.com> [kraxel]
@@ -186,7 +182,6 @@ EmbeddedPkg
 F: EmbeddedPkg/
 W: https://github.com/tianocore/tianocore.github.io/wiki/EmbeddedPkg
 M: Leif Lindholm <quic_llindhol@quicinc.com> [leiflindholm]
-M: Ard Biesheuvel <ardb+tianocore@kernel.org> [ardbiesheuvel]
 M: Abner Chang <abner.chang@amd.com> [changab]
 
 EmulatorPkg
@@ -433,7 +428,6 @@ R: Brit Chesley <brit.chesley@amd.com> [BritChesley]
 MdePkg: ARM/AARCH64 standard interfaces
 F: MdePkg/Include/Library/ArmLib.h
 M: Leif Lindholm <quic_llindhol@quicinc.com> [leiflindholm]
-M: Ard Biesheuvel <ardb+tianocore@kernel.org> [ardbiesheuvel]
 R: Sami Mujawar <sami.mujawar@arm.com> [samimujawar]
 
 NetworkPkg
@@ -445,7 +439,6 @@ R: Zachary Clark-williams <zachary.clark-williams@intel.com> [Zclarkwilliams]
 OvmfPkg
 F: OvmfPkg/
 W: http://www.tianocore.org/ovmf/
-M: Ard Biesheuvel <ardb+tianocore@kernel.org> [ardbiesheuvel]
 M: Jiewen Yao <jiewen.yao@intel.com> [jyao1]
 R: Gerd Hoffmann <kraxel@redhat.com> [kraxel]
 S: Maintained
@@ -603,7 +596,6 @@ W: https://github.com/tianocore/tianocore.github.io/wiki/SourceLevelDebugPkg
 
 StandaloneMmPkg
 F: StandaloneMmPkg/
-M: Ard Biesheuvel <ardb+tianocore@kernel.org> [ardbiesheuvel]
 M: Sami Mujawar <sami.mujawar@arm.com> [samimujawar]
 M: Ray Ni <ray.ni@intel.com> [niruiyu]
 R: Jiaxin Wu <jiaxin.wu@intel.com> [jiaxinwu]