chore(docs): remove horizontal example

docs/src/examples/empty.md

@@ -1,8 +0,0 @@
-# Empty
-
-Similar to the drag and drop example, we can also add nodes to an empty graph on a button click, 
-which triggers a push into our elements / nodes array.
-
-<div class="mt-6">
-  <Repl example="empty"></Repl>
-</div>

docs/src/examples/horizontal.md

@@ -1,10 +0,0 @@
-# Horizontal Layout
-
-Vue Flow doesn't require you to use vertical layouts.
-You can use horizontal layouts with the default node types as well.
-
-You can define where source or target handle positions are with the `sourcePosition` or `targetPosition` properties of nodes.
-
-<div class="mt-6">
-  <Repl example="horizontal"></Repl>
-</div>