Fix clippy warnings in data tests

Author: 9prady9

tests/data.rs

@@ -1,13 +1,13 @@
 use ::arrayfire::*;
-use float_cmp::approx_eq;
 
+#[allow(unused_variables)]
 #[test]
 fn check_reorder_api() {
     let dims = Dim4::new(&[4, 5, 2, 3]);
-    let A = randu::<f32>(dims);
+    let a = randu::<f32>(dims);
 
-    let transposedA = reorder_v2(&A, 1, 0, None);
-    let swap_0_2 = reorder_v2(&A, 2, 1, Some(vec![0]));
-    let swap_1_2 = reorder_v2(&A, 0, 2, Some(vec![1]));
-    let swap_0_3 = reorder_v2(&A, 3, 1, Some(vec![2, 0]));
+    let transposed = reorder_v2(&a, 1, 0, None);
+    let swap_0_2 = reorder_v2(&a, 2, 1, Some(vec![0]));
+    let swap_1_2 = reorder_v2(&a, 0, 2, Some(vec![1]));
+    let swap_0_3 = reorder_v2(&a, 3, 1, Some(vec![2, 0]));
 }