MAINTAINERS: remove maintainer-ship status for ioannisg

Removing maintainer and/or collaborator status on
- nRF platforms
- TF-M
- userspace
- cmsis-dsp
- MAINTAINERS file

for ioannisg. Replace with @anangl or others, where applicable.

Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
diff --git a/CODEOWNERS b/CODEOWNERS
index b08cdfb..5cb1840 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -16,7 +16,7 @@
 /.github/				  @nashif
 /.github/workflows/                       @galak @nashif
 /.buildkite/				  @galak
-/MAINTAINERS.yml                          @ioannisg @MaureenHelm
+/MAINTAINERS.yml                          @MaureenHelm
 /arch/arc/                                @abrodkin @ruuddw @evgeniy-paltsev
 /arch/arm/                                @MaureenHelm @galak @ioannisg
 /arch/arm/core/aarch32/cortex_m/cmse/     @ioannisg
@@ -42,7 +42,7 @@
 /soc/arm/gigadevice/                      @nandojve
 /soc/arm/infineon_xmc/                    @parthitce
 /soc/arm/nxp*/                            @mmahadevan108 @dleach02
-/soc/arm/nordic_nrf/                      @ioannisg
+/soc/arm/nordic_nrf/                      @anangl
 /soc/arm/nuvoton_npcx/                    @MulinChao @WealianLiao @ChiHuaL
 /soc/arm/nuvoton_numicro/                 @ssekar15
 /soc/arm/quicklogic_eos_s3/               @kowalewskijan @kgugala
@@ -115,12 +115,12 @@
 /boards/arm/mps2_an385/                   @fvincenzo
 /boards/arm/msp_exp432p401r_launchxl/     @Mani-Sadhasivam
 /boards/arm/npcx7m6fb_evb/                @MulinChao @WealianLiao @ChiHuaL
-/boards/arm/nrf*/                         @carlescufi @lemrey @ioannisg
+/boards/arm/nrf*/                         @carlescufi @lemrey
 /boards/arm/nucleo*/                      @erwango @ABOSTM @FRASTM
 /boards/arm/nucleo_f401re/                @idlethread
 /boards/arm/nuvoton_pfm_m487/             @ssekar15
 /boards/arm/qemu_cortex_r*/               @stephanosio
-/boards/arm/qemu_cortex_m*/               @ioannisg
+/boards/arm/qemu_cortex_m*/               @ioannisg @stephanosio
 /boards/arm/quick_feather/                @kowalewskijan @kgugala
 /boards/arm/rak4631_nrf52840/             @gpaquet85
 /boards/arm/rak5010_nrf52840/             @gpaquet85
@@ -274,12 +274,12 @@
 /drivers/interrupt_controller/intc_gic.c  @stephanosio
 /drivers/interrupt_controller/*esp32*     @glaubermaroto
 /drivers/ipm/ipm_mhu*                     @karl-zh
-/drivers/ipm/Kconfig.nrfx                 @masz-nordic @ioannisg
-/drivers/ipm/Kconfig.nrfx_ipc_channel     @masz-nordic @ioannisg
+/drivers/ipm/Kconfig.nrfx                 @masz-nordic
+/drivers/ipm/Kconfig.nrfx_ipc_channel     @masz-nordic
 /drivers/ipm/ipm_intel_adsp.c             @finikorg
 /drivers/ipm/ipm_cavs_idc*                @dcpleung
-/drivers/ipm/ipm_nrfx_ipc.c               @masz-nordic @ioannisg
-/drivers/ipm/ipm_nrfx_ipc.h               @masz-nordic @ioannisg
+/drivers/ipm/ipm_nrfx_ipc.c               @masz-nordic
+/drivers/ipm/ipm_nrfx_ipc.h               @masz-nordic
 /drivers/ipm/ipm_stm32_ipcc.c             @arnopo
 /drivers/ipm/ipm_stm32_hsem.c             @cameled
 /drivers/kscan/                           @VenkatKotakonda @franciscomunoz @scottwcpg
@@ -358,7 +358,7 @@
 /drivers/timer/apic_timer.c               @dcpleung @nashif
 /drivers/timer/apic_tsc.c                 @andyross
 /drivers/timer/arm_arch_timer.c           @carlocaione
-/drivers/timer/cortex_m_systick.c         @ioannisg
+/drivers/timer/cortex_m_systick.c         @anangl
 /drivers/timer/altera_avalon_timer_hal.c  @nashif
 /drivers/timer/riscv_machine_timer.c      @kgugala @pgielda
 /drivers/timer/ite_it8xxx2_timer.c        @ite
@@ -414,7 +414,7 @@
 /dts/arm/ti/cc13?2*                       @bwitherspoon
 /dts/arm/ti/cc26?2*                       @bwitherspoon
 /dts/arm/ti/cc3235*                       @vanti
-/dts/arm/nordic/                          @ioannisg @carlescufi
+/dts/arm/nordic/                          @anangl @carlescufi
 /dts/arm/nuvoton/                         @ssekar15 @MulinChao @WealianLiao @ChiHuaL
 /dts/arm/nxp/                             @mmahadevan108 @dleach02
 /dts/arm/microchip/                       @franciscomunoz @albertofloyd @scottwcpg
@@ -578,7 +578,7 @@
 /modules/canopennode/                     @henrikbrixandersen
 /modules/mbedtls/                         @ceolin @d3zd3z
 /modules/hal_gigadevice/                  @nandojve
-/modules/trusted-firmware-m/              @ioannisg @microbuilder
+/modules/trusted-firmware-m/              @microbuilder
 /kernel/device.c                          @andyross @nashif
 /kernel/idle.c                            @andyross @nashif
 /samples/                                 @nashif
@@ -613,7 +613,7 @@
 /samples/subsys/mgmt/osdp/                @sidcha
 /samples/subsys/usb/                      @jfischer-no
 /samples/subsys/pm/                       @nashif @ceolin
-/samples/tfm_integration/                 @ioannisg @microbuilder
+/samples/tfm_integration/                 @microbuilder
 /samples/userspace/                       @dcpleung @nashif
 /scripts/release/bug_bash.py              @cfriedt
 /scripts/coccicheck                       @himanshujha199640 @JuliaLawall
@@ -675,7 +675,7 @@
 /subsys/fs/fcb/                           @nvlsianpu
 /subsys/fs/fuse_fs_access.c               @vanwinkeljan
 /subsys/fs/nvs/                           @Laczen
-/subsys/ipc/                              @ioannisg
+/subsys/ipc/                              @carlocaione
 /subsys/logging/                          @nordic-krch
 /subsys/logging/log_backend_net.c         @nordic-krch @rlubos
 /subsys/lorawan/                          @Mani-Sadhasivam