Remove unneded parens

src/database/file.rs

@@ -122,7 +122,7 @@ impl File {
     /// Can only be done if parent container already exists.
     ///
     /// For specifics refer to `insert()` method.
-    fn touch(&mut self, pointer: &str) -> (Result<(), IncorrectPointer>) {
+    fn touch(&mut self, pointer: &str) -> Result<(), IncorrectPointer> {
         //  If value is present - we're done
         if pointer.is_empty() || self.contents.pointer_mut(pointer).is_some() {
             return Ok(());