Fix clippy warnings in math

The solution is not pretty, but not sure why we still get clippy
warning from one of the files in `libm` even though we use
`allow(clippy::all)`

Author: Amjad50

src/lib.rs

@@ -45,6 +45,9 @@ mod macros;
 pub mod float;
 pub mod int;
 
+// For some reason, we still get clippy error `clippy::deprecated_cfg_attr` even though, we have
+// used `allow(clippy::all)` in the file. So, we are disabling the clippy check for this file.
+#[cfg(not(feature = "cargo-clippy"))]
 pub mod math;
 pub mod mem;
 

src/math.rs

@@ -1,4 +1,5 @@
 #[allow(dead_code)]
+#[allow(unused_imports)]
 #[path = "../libm/src/math/mod.rs"]
 mod libm;