Remove edgetpudemo and python3-edgetpuvision

- These are not the easiest to make work on Excelsior. Leave out for
the time being.

Change-Id: I1578b35c4ae9aa585e799d7da33ccf35402044de
diff --git a/debian/control b/debian/control
index a8b964e..3c0fa5e 100644
--- a/debian/control
+++ b/debian/control
@@ -17,8 +17,6 @@
          mendel-core,
          lk-bootloader,
          mtk-board-audio,
-         edgetpudemo,
-         python3-edgetpuvision,
          python3-edgetpu,
          trustzone,
          usbutils,