snipe off some unsafe code

Author: davidhewitt

src/validators/decimal.rs

@@ -182,11 +182,7 @@ impl Validator for DecimalValidator {
 
         if let Some(multiple_of) = &self.multiple_of {
             // fraction = (decimal / multiple_of) % 1
-            let fraction = unsafe {
-                let division = decimal.div(multiple_of)?;
-                let one = 1u8.into_pyobject(py)?;
-                Bound::from_owned_ptr_or_err(py, pyo3::ffi::PyNumber_Remainder(division.as_ptr(), one.as_ptr()))?
-            };
+            let fraction = (decimal.div(multiple_of)?).rem(1)?;
             let zero = 0u8.into_pyobject(py)?;
             if !fraction.eq(&zero)? {
                 return Err(ValError::new(