remove extra methods

src/app/browser/window/tab/item/page/navigation.rs

@@ -88,7 +88,7 @@ impl Navigation {
     pub fn update(&self, progress_fraction: Option<f64>) {
         self.home.update(self.request.uri());
         self.history.update();
-        self.reload.update(!self.request.is_empty());
+        self.reload.update(!self.request.text().is_empty());
         self.request.update(progress_fraction);
         self.bookmark.update();
     }

src/app/browser/window/tab/item/page/navigation/request.rs

@@ -103,10 +103,6 @@ impl Request {
         &self.widget.gobject()
     }
 
-    pub fn is_empty(&self) -> bool {
-        self.widget.is_empty()
-    }
-
     pub fn text(&self) -> GString {
         self.widget.text()
     }

src/app/browser/window/tab/item/page/navigation/request/widget.rs

@@ -211,10 +211,6 @@ impl Widget {
         &self.gobject
     }
 
-    pub fn is_empty(&self) -> bool {
-        0 == self.gobject.text_length()
-    }
-
     pub fn text(&self) -> GString {
         self.gobject.text()
     }