virtualizationservice will clear its own temporary directory.

Bug: 192917795
Bug: 193365943
Test: flashed on a VIM3L and booted
Change-Id: Ib9657843c4d13c428670982a3f8d0e5dfdb78211

rootdir/init.rc

diff --git a/rootdir/init.rc b/rootdir/init.rc
index a8bef42..a7322fa 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -750,8 +750,7 @@
     mkdir /data/misc/odrefresh 0777 system system
     # directory used for on-device signing key blob
     mkdir /data/misc/odsign 0700 root root
-    # Directory for VirtualizationService temporary image files. Ensure that it is empty.
-    exec -- /bin/rm -rf /data/misc/virtualizationservice
+    # Directory for VirtualizationService temporary image files.
     mkdir /data/misc/virtualizationservice 0700 virtualizationservice virtualizationservice
 
     mkdir /data/preloads 0775 system system encryption=None