Remove calls to Error()

Now that we have an error handler set, we can simply let them bubble up all the
way to gocui.

pkg/gui/controllers/helpers/inline_status_helper.go

@@ -74,7 +74,7 @@ func (self *InlineStatusHelper) WithInlineStatus(opts InlineStatusOpts, f func(g
 			err := f(inlineStatusHelperTask{task, self, opts})
 			if err != nil {
 				self.c.OnUIThread(func() error {
-					return self.c.Error(err)
+					return err
 				})
 			}