style: Fix linter formatting issues.

Author: Keykyrios

src/test/java/com/thealgorithms/maths/NevilleTest.java

@@ -48,18 +48,14 @@ public void testMismatchedArrayLengths() {
         double[] x = {1, 2};
         double[] y = {1};
         double target = 1.5;
-        assertThrows(IllegalArgumentException.class, () -> {
-            Neville.interpolate(x, y, target);
-        });
+        assertThrows(IllegalArgumentException.class, () -> Neville.interpolate(x, y, target));
     }
 
     @Test
     public void testEmptyArrays() {
         double[] x = {};
         double[] y = {};
         double target = 1;
-        assertThrows(IllegalArgumentException.class, () -> {
-            Neville.interpolate(x, y, target);
-        });
+        assertThrows(IllegalArgumentException.class, () -> Neville.interpolate(x, y, target));
     }
-}
+}