layout: Fix warning

This fixes

warning: unnecessary parentheses around block return value
   --> /var/scratch/librem5/squeekboard/src/layout.rs:110:13
    |
110 | /             (point.x > self.x && point.x < self.x + self.width
111 | |                 && point.y > self.y && point.y < self.y + self.height)
    | |______________________________________________________________________^
    |
    = note: `#[warn(unused_parens)]` on by default

src/layout.rs

@@ -107,8 +107,8 @@ pub mod c {
 
     impl Bounds {
         pub fn contains(&self, point: &Point) -> bool {
-            (point.x > self.x && point.x < self.x + self.width
-                && point.y > self.y && point.y < self.y + self.height)
+            point.x > self.x && point.x < self.x + self.width
+                && point.y > self.y && point.y < self.y + self.height
         }
     }