random: remove deprecated rand32.h #146058

Job	Run time
twister-build-prep	56s
twister-build-prep	2m 36s
twister-build	0s
Publish Unit Tests Results	7s
Publish Unit Tests Results	12s
Check Twister Status / all jobs passed	1s
Check Twister Status / all jobs passed	1s
twister-build (1)	41m 20s
twister-build (2)	36m 36s
twister-build (3)	33m 48s
twister-build (4)	42m 13s
twister-build (5)	24m 42s
twister-build (6)	23m 32s
twister-build (7)	27m 37s
	3h 53m 41s

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