sort, more: remove ctrlc or signal-hook from dependency tree

I noticed that both of signal-hook and ctrlc is used just once:

$ cargo tree -i signal-hook
signal-hook v0.3.18
├── crossterm v0.29.0
│   └── uu_more v0.9.0 (/tmp/coreutils/src/uu/more)
│       └── coreutils v0.9.0 (/tmp/coreutils)
└── signal-hook-mio v0.2.5
    └── crossterm v0.29.0 (*)
$ cargo tree -i ctrlc
ctrlc v3.5.2
└── uu_sort v0.9.0 (/tmp/coreutils/src/uu/sort)
    └── coreutils v0.9.0 (/tmp/coreutils)

Start by inspecting the dependency declarations and usage in uu_more and uu_sort, then run the cargo tree commands shown in the issue to confirm how signal-hook and ctrlc enter the tree. Determine whether either dependency can be removed without changing command behavior; done means the intended dependency no longer appears in the relevant tree and the affected commands still build and test successfully.