Revert back to actual source frame resolution

Change-Id: Ia4e3751207a48f641ef1fd75d4fcd3b48382d85d
diff --git a/edgetpuvision/gstreamer.py b/edgetpuvision/gstreamer.py
index 8c651e1..663e49a 100644
--- a/edgetpuvision/gstreamer.py
+++ b/edgetpuvision/gstreamer.py
@@ -138,12 +138,7 @@
 
 def make_layout(inference_size, render_size):
     inference_size = Size(*inference_size)
-    # render_size capped to 1280x720
-    input_size = Size(*render_size)
-    width, height = input_size
-    render_size = input_size * 720 / height
-    if (render_size.width > 1280):
-      render_size = input_size * 1280 / width
+    render_size = Size(*render_size)
     size = min_outer_size(inference_size, render_size)
     window = center_inside(render_size, size)
     return Layout(size=size, window=window,