Remove samples/legacy from sdk.atree

This directory is only on my local machine, and doesn't
really exist. :)

Change-Id: Iea29b3f06fd089a5dca0f990cca058d9c2e7179b
diff --git a/build/sdk.atree b/build/sdk.atree
index 849780d..5f7a272 100644
--- a/build/sdk.atree
+++ b/build/sdk.atree
@@ -190,7 +190,6 @@
 developers/samples/android/connectivity        samples/${PLATFORM_NAME}/connectivity
 developers/samples/android/content             samples/${PLATFORM_NAME}/content
 developers/samples/android/input               samples/${PLATFORM_NAME}/input
-developers/samples/android/legacy              samples/${PLATFORM_NAME}/legacy
 developers/samples/android/media               samples/${PLATFORM_NAME}/media
 developers/samples/android/security            samples/${PLATFORM_NAME}/security
 developers/samples/android/testing             samples/${PLATFORM_NAME}/testing