Remove useless parenthesis.

src/lib.rs

@@ -99,6 +99,7 @@ Feel free to add your project to this list if you happen to use **nalgebra**!
 #[crate_id = "nalgebra#0.1"];
 #[crate_type = "lib"];
 #[deny(non_camel_case_types)];
+#[deny(unnecessary_parens)];
 #[deny(non_uppercase_statics)];
 #[deny(unnecessary_qualification)];
 #[warn(missing_doc)];

src/structs/dmat.rs

@@ -348,7 +348,7 @@ Inv for DMat<N> {
 
             let mut n0 = k; // index of a non-zero entry
 
-            while (n0 != dim) {
+            while n0 != dim {
                 if unsafe { self.at_fast(n0, k) } != _0T {
                     break;
                 }

src/structs/mat_macros.rs

@@ -364,7 +364,7 @@ macro_rules! inv_impl(
 
                 let mut n0 = k; // index of a non-zero entry
 
-                while (n0 != $dim) {
+                while n0 != $dim {
                     if self.at((n0, k)) != _0N {
                         break;
                     }