ctutils: remove `target_pointer_width` gating (#1389) #2144

Job	Run time
test (1.85.0)	19s
test (stable)	19s
build (stable, thumbv7em-none-eabi)	29s
build (stable, wasm32-unknown-unknown)	15s
build (1.85.0, thumbv7em-none-eabi)	16s
minimal-versions / minimal-versions	26s
build (1.85.0, wasm32-unknown-unknown)	19s
	2m 23s

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