kernel: cleanup debug APIs #4749

Job	Run time
RT-Thread Online Packages (STM32F407 RT-Spark)	7m 25s
RTduino/Arduino Libraries (STM32F412 Nucleo)	10m 43s
RTduino/Arduino Libraries (Raspberry Pico)	15m 34s
others_at32_hc32_ht32	6m 34s
stm32l4_f0_f1	14m 59s
stm32_f2_f4	10m 35s
stm32_f7_g0_h7_mp15_u5_h5_wb5	5m 48s
nxp_renesas	5m 59s
nuvoton	5m 42s
gd32_n32_apm32	5m 39s
Infineon_TI_microchip	6m 21s
mips	4m 7s
aarch64	5m 26s
riscv-none	2m 49s
riscv64-unknown	3m 50s
hpmicro	3m 37s
llvm-arm	6m 52s
simulator	2m 48s
ESP32C3	25m 30s
i386-unknown	3m 39s
nordic(yml)	11m 40s
	2h 45m 37s

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