Fix unused imports

    warning: unused imports: `parse_concise_float`, `parse_truncated_float`
      --> tests/../src/lexical/mod.rs:38:23
       |
    38 | pub use self::parse::{parse_concise_float, parse_truncated_float};
       |                       ^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^
       |
       = note: `#[warn(unused_imports)]` on by default

    warning: unused import: `std::vec::Vec`
      --> tests/lexical.rs:30:13
       |
    30 |     pub use std::vec::Vec;
       |             ^^^^^^^^^^^^^

    warning: unused imports: `cmp`, `iter`, `mem`, `ops`
      --> tests/lexical.rs:31:19
       |
    31 |     pub use std::{cmp, iter, mem, ops};
       |                   ^^^  ^^^^  ^^^  ^^^

tests/lexical.rs

@@ -26,11 +26,6 @@ extern crate alloc;
 #[path = "../src/lexical/mod.rs"]
 mod lexical;
 
-mod lib {
-    pub use std::vec::Vec;
-    pub use std::{cmp, iter, mem, ops};
-}
-
 #[path = "lexical/algorithm.rs"]
 mod algorithm;
 

tests/lexical/parse.rs

@@ -1,7 +1,7 @@
 // Adapted from https://github.com/Alexhuszagh/rust-lexical.
 
 use crate::lexical::num::Float;
-use crate::lexical::parse::{parse_concise_float, parse_truncated_float};
+use crate::lexical::{parse_concise_float, parse_truncated_float};
 use core::f64;
 use core::fmt::Debug;