debug: gdbstub: Re-enable warning #160303

Job	Run time
twister-build-prep / prep_pr	3m 55s
twister-build-prep / prep_push	0s
twister-build (1)	29m 46s
twister-build (2)	30m 36s
twister-build (3)	29m 7s
twister-build (4)	35m 33s
twister-build (5)	22m 26s
twister-build (6)	24m 50s
twister-build (7)	28m 29s
Publish Unit Tests Results	11s
Check Twister Status / all jobs passed	1s
	3h 24m 54s

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