[clean up] Remove unused helper method.

[turon]

Problem

Identified a small unused method

Change overview

Remove unused method

Testing

build and CI

[github-actions]

PR #13597: Size comparison from 45214cf to c8c1576

Full report (32 builds for efr32, esp32, k32w, linux, mbed, nrfconnect, p6, qpg, telink)

platform	target	config	section	45214cf	c8c1576	change	% change
efr32	lighting-app	BRD4161A	(read only)	832780	832780	0	0.0
			(read/write)	127628	127628	0	0.0
			.bss	125744	125744	0	0.0
			.data	1884	1884	0	0.0
			.text	832772	832772	0	0.0
		BRD4161A+rpc	(read only)	820200	820200	0	0.0
			(read/write)	144288	144288	0	0.0
			.bss	142304	142304	0	0.0
			.data	1984	1984	0	0.0
			.text	820192	820192	0	0.0
	window-app	BRD4161A	(read only)	805440	805440	0	0.0
			(read/write)	126320	126320	0	0.0
			.bss	124480	124480	0	0.0
			.data	1836	1836	0	0.0
			.text	805432	805432	0	0.0
esp32	all-clusters-app	c3devkit	(read only)	910038	910038	0	0.0
			(read/write)	1316506	1316506	0	0.0
			.dram0.bss	70504	70504	0	0.0
			.dram0.data	14284	14284	0	0.0
			.flash.rodata	178224	178224	0	0.0
			.flash.text	910038	910038	0	0.0
			.iram0.text	62056	62056	0	0.0
		m5stack	(read only)	959023	959023	0	0.0
			(read/write)	448672	448672	0	0.0
			.dram0.bss	74976	74976	0	0.0
			.dram0.data	34064	34064	0	0.0
			.flash.rodata	207504	207504	0	0.0
			.flash.text	953639	953639	0	0.0
			.iram0.text	123399	123399	0	0.0
k32w	light	k32w061+release	(read/write)	657920	657920	0	0.0
			.bss	77136	77136	0	0.0
			.data	1852	1852	0	0.0
			.text	573132	573132	0	0.0
	lock	k32w061+release	(read/write)	661604	661604	0	0.0
			.bss	77432	77432	0	0.0
			.data	1872	1872	0	0.0
			.text	576500	576500	0	0.0
linux	chip-tool-ipv6only	arm64	(read only)	8038948	8038948	0	0.0
			(read/write)	370497	370497	0	0.0
			.bss	55217	55217	0	0.0
			.data	1096	1096	0	0.0
			.data.rel.ro	245760	245760	0	0.0
			.dynamic	560	560	0	0.0
			.got	64728	64728	0	0.0
			.init	24	24	0	0.0
			.init_array	168	168	0	0.0
			.rodata	419292	419292	0	0.0
			.text	6830996	6830996	0	0.0
	thermostat-no-ble	arm64	(read only)	2042108	2042108	0	0.0
			(read/write)	145969	145969	0	0.0
			.bss	65089	65089	0	0.0
			.data	880	880	0	0.0
			.data.rel.ro	73016	73016	0	0.0
			.dynamic	560	560	0	0.0
			.got	4048	4048	0	0.0
			.init	24	24	0	0.0
			.init_array	304	304	0	0.0
			.rodata	129884	129884	0	0.0
			.text	1697632	1697632	0	0.0
mbed	all-clusters-app	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	2347896	2347896	0	0.0
			.bss	189204	189204	0	0.0
			.data	5320	5320	0	0.0
			.text	1310472	1310472	0	0.0
	lighting-app	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	2332480	2332480	0	0.0
			.bss	180752	180752	0	0.0
			.data	5560	5560	0	0.0
			.text	1295080	1295080	0	0.0
	lock-app	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	2304656	2304656	0	0.0
			.bss	179768	179768	0	0.0
			.data	5544	5544	0	0.0
			.text	1267256	1267256	0	0.0
	pigweed-app	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	1139712	1139712	0	0.0
			.bss	11756	11756	0	0.0
			.data	4368	4368	0	0.0
			.text	103096	103096	0	0.0
	shell	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	2054464	2054464	0	0.0
			.bss	156876	156876	0	0.0
			.data	4864	4864	0	0.0
			.text	1017064	1017064	0	0.0
nrfconnect	lighting-app	nrf52840dk_nrf52840	(read/write)	941399	941399	0	0.0
			bss	119624	119624	0	0.0
			rodata	108660	108660	0	0.0
			text	635532	635532	0	0.0
		nrf52840dk_nrf52840+rpc	(read/write)	926879	926879	0	0.0
			bss	116668	116668	0	0.0
			rodata	101108	101108	0	0.0
			text	630924	630924	0	0.0
		nrf52840dongle_nrf52840	(read/write)	992043	992043	0	0.0
			bss	122464	122464	0	0.0
			rodata	113412	113412	0	0.0
			text	667728	667728	0	0.0
		nrf5340dk_nrf5340_cpuapp	(read/write)	851222	851222	0	0.0
			bss	116412	116412	0	0.0
			rodata	101832	101832	0	0.0
			text	552452	552452	0	0.0
	lock-app	nrf52840dk_nrf52840	(read/write)	912571	912571	0	0.0
			bss	118784	118784	0	0.0
			rodata	103792	103792	0	0.0
			text	612628	612628	0	0.0
		nrf5340dk_nrf5340_cpuapp	(read/write)	822638	822638	0	0.0
			bss	115600	115600	0	0.0
			rodata	97016	97016	0	0.0
			text	529592	529592	0	0.0
	pigweed-app	nrf52840dk_nrf52840	(read/write)	541835	541835	0	0.0
			bss	52588	52588	0	0.0
			rodata	50104	50104	0	0.0
			text	376940	376940	0	0.0
	pump-app	nrf52840dk_nrf52840	(read/write)	913959	913959	0	0.0
			bss	118544	118544	0	0.0
			rodata	104004	104004	0	0.0
			text	613956	613956	0	0.0
	pump-controller-app	nrf52840dk_nrf52840	(read/write)	910715	910715	0	0.0
			bss	118572	118572	0	0.0
			rodata	103264	103264	0	0.0
			text	611412	611412	0	0.0
	shell	nrf52840dk_nrf52840	(read/write)	798655	798655	0	0.0
			bss	109776	109776	0	0.0
			rodata	78388	78388	0	0.0
			text	533992	533992	0	0.0
		nrf5340dk_nrf5340_cpuapp	(read/write)	711470	711470	0	0.0
			bss	107664	107664	0	0.0
			rodata	72688	72688	0	0.0
			text	451672	451672	0	0.0
p6	all-clusters-app	default	(read/write)	2402336	2402336	0	0.0
			.bss	117484	117484	0	0.0
			.data	2592	2592	0	0.0
			.text	1360600	1360600	0	0.0
	light-app	default	(read/write)	2327560	2327560	0	0.0
			.bss	106064	106064	0	0.0
			.data	2392	2392	0	0.0
			.text	1285824	1285824	0	0.0
	lock-app	default	(read/write)	2298472	2298472	0	0.0
			.bss	104920	104920	0	0.0
			.data	2344	2344	0	0.0
			.text	1256736	1256736	0	0.0
qpg	lighting-app	qpg6105+debug	(read only)	561976	561976	0	0.0
			(read/write)	146936	146936	0	0.0
			.bss	89952	89952	0	0.0
			.data	1044	1044	0	0.0
			.text	556656	556656	0	0.0
	lock-app	qpg6105+debug	(read only)	515292	515292	0	0.0
			(read/write)	146936	146936	0	0.0
			.bss	88584	88584	0	0.0
			.data	972	972	0	0.0
			.text	509972	509972	0	0.0
	persistent-storage-app	qpg6105+debug	(read only)	106848	106848	0	0.0
			(read/write)	146940	146940	0	0.0
			.bss	38512	38512	0	0.0
			.data	288	288	0	0.0
			.text	101528	101528	0	0.0
telink	lighting-app	tlsr9518adk80d	(read/write)	838470	838470	0	0.0
			bss	87312	87312	0	0.0
			noinit	37160	37160	0	0.0
			text	585624	585624	0	0.0