Removed the recovery.img flashing in provision-device

To remove the recovery.img flashing in align with the latest Brillo
code removing the recovery.img.

BUG=26962192

Change-Id: I069b3c2e80a865033d0224bedce40269e5370db8
diff --git a/provision-device b/provision-device
index 1499288..f75d182 100755
--- a/provision-device
+++ b/provision-device
@@ -31,5 +31,4 @@
   flash system_b ${OS}/system.img \
   flash userdata ${OS}/userdata.img \
   flash cache ${OS}/cache.img \
-  flash recovery ${OS}/recovery.img \
   flash secure ${VENDOR}/bootloader/teesst.img