removed typename and short_type_name methods

Author: Christoph

druid/src/widget/slider.rs

@@ -227,14 +227,6 @@ impl Widget<f64> for Slider {
             ..Default::default()
         }
     }
-
-    fn type_name(&self) -> &'static str {
-        "Slider"
-    }
-
-    fn short_type_name(&self) -> &'static str {
-        "Slider"
-    }
 }
 
 impl RangeSlider {
@@ -436,14 +428,6 @@ impl Widget<(f64, f64)> for RangeSlider {
             ..Default::default()
         }
     }
-
-    fn type_name(&self) -> &'static str {
-        "Range Slider"
-    }
-
-    fn short_type_name(&self) -> &'static str {
-        "Range Slider"
-    }
 }
 
 impl<T, W: Widget<T>> Annotated<T, W> {
@@ -625,14 +609,6 @@ impl<T: Data, W: Widget<T>> Widget<T> for Annotated<T, W> {
             ..Default::default()
         }
     }
-
-    fn type_name(&self) -> &'static str {
-        "Slider Annotation"
-    }
-
-    fn short_type_name(&self) -> &'static str {
-        "Annotated"
-    }
 }
 
 impl SliderValueMapping {