Remove when_else

Co-Authored-By: Marshall Bowers <1486634+maxdeviant@users.noreply.github.com>

crates/gpui2/src/element.rs

@@ -69,24 +69,6 @@ pub trait IntoElement: Sized {
         self.map(|this| if condition { then(this) } else { this })
     }
 
-    fn when_else(
-        self,
-        condition: bool,
-        then: impl FnOnce(Self) -> Self,
-        otherwise: impl FnOnce(Self) -> Self,
-    ) -> Self
-    where
-        Self: Sized,
-    {
-        self.map(|this| {
-            if condition {
-                then(this)
-            } else {
-                otherwise(this)
-            }
-        })
-    }
-
     fn when_some<T>(self, option: Option<T>, then: impl FnOnce(Self, T) -> Self) -> Self
     where
         Self: Sized,