Lint on pub(crate) inside private mod

[1tgr]

pub(crate) within mod is redundant as the parent mod is not public:

mod a {
    pub(crate) fn f() { }

    // f is not accessible outside of a, so it's the same as:
    // pub fn f() { }
}

It's also redundant to re-state pub(crate):

pub(crate) mod b {
    pub(crate) fn g() { }

    // b is already crate-visible, so g is the same as:
    // pub fn g() { }
}