Remove two packages that are no longer needed in a post-buster world

Change-Id: If7125e94a3efb8a038532d1b332e6b17ad5b7b30
diff --git a/enterprise.xml b/enterprise.xml
index 2e51312..82d6f53 100644
--- a/enterprise.xml
+++ b/enterprise.xml
@@ -3,10 +3,6 @@
 
     <include name="mendel.xml"/>
 
-    <!-- BEGIN prebuilts -->
-    <project path="prebuilts" name="prebuilts" />
-    <!-- END prebuilts -->
-
     <!-- BEGIN imx specific build tools -->
     <project path="tools/imx-mkimage" name="imx-mkimage" />
     <project path="packages/imx-mkimage" name="imx-mkimage-debian" />
@@ -45,7 +41,6 @@
     <project path="packages/imx-gst-plugins-good" name="imx-gst-plugins-good-debian"  />
     <project path="packages/imx-gst-plugins-bad" name="imx-gst-plugins-bad-debian"  />
     <project path="packages/imx-gst1.0-plugin" name="imx-gst1.0-plugin-debian"  />
-    <project path="packages/gst-plugins-ugly1.0" name="gst-plugins-ugly1.0"  />
 
     <project path="wayland-protocols-imx" name="wayland-protocols-imx"  />
     <project path="packages/wayland-protocols-imx" name="wayland-protocols-imx-debian"  />