all: Remove superfluous prefix from boards config #691

Job	Run time
Build and package cores	11m 46s
Split off zephyr_contrib	18s
Split off zephyr_main	16s
Split off zephyr	12s
Split off zephyr_unoq	7s
Test zephyr_main:nano33ble	2m 34s
Test zephyr_main:opta	2m 27s
Test zephyr_main:giga	2m 32s
Test zephyr_main:portentac33	2m 38s
Test zephyr_main:niclasense	2m 27s
Test zephyr_main:portentah7	1m 53s
Test zephyr_contrib:ek_ra8d1	2m 27s
Test zephyr_contrib:frdm_mcxn947	2m 19s
Test zephyr_contrib:frdm_rw612	2m 18s
Test zephyr:unoq	2m 21s
Collect logs	7s
Publish jsons	14s
Publish core	0s
verify-core	0s
cleanup-artifacts	4s
	37m 0s

Provide feedback