chore(primitives): remove Fx* aliases (#749) #2035

Job	Run time
miri --no-default-features	4m 39s
test ubuntu-latest stable --no-default-features	1m 14s
miri	4m 35s
miri --all-features	6m 57s
check no_std	32s
test ubuntu-latest stable	1m 7s
test ubuntu-latest nightly --no-default-features	49s
test ubuntu-latest nightly	53s
clippy	34s
docs	33s
test ubuntu-latest 1.79 --no-default-features	29s
test ubuntu-latest 1.79	28s
test windows-latest stable --no-default-features	3m 40s
features stable	1m 33s
wasm	30s
test windows-latest stable	28s
features stable --all-targets	2m 41s
features nightly	1m 34s
test windows-latest nightly --no-default-features	2m 21s
features nightly --all-targets	35s
test windows-latest nightly	2m 16s
test windows-latest 1.79 --no-default-features	1m 7s
test windows-latest 1.79	49s
test ubuntu-latest 1.79 --features json	31s
fmt	14s
test windows-latest 1.79 --features json	1m 31s
test ubuntu-latest nightly --all-features	1m 11s
test windows-latest nightly --all-features	36s
	44m 27s

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