verity: no longer need to set verify_mode

file_hasher.cc

Index: file_hasher.cc
diff --git a/file_hasher.cc b/file_hasher.cc
index ab874d932f9832ef0dd0154761483227bd428ed1..fd6bda27c1e9d569ccf2bcab570708365e0c8e31 100644
--- a/file_hasher.cc
+++ b/file_hasher.cc
@@ -84,9 +84,6 @@ bool FileHasher::Initialize(simple_file::File *source,
   dm_bht_set_write_cb(&tree_, FileHasher::WriteCallback);
   // No reading is needed.
   dm_bht_set_read_cb(&tree_, dm_bht_zeroread_callback);
-  // Ensure that we don't use the bitmaps otherwise the
-  // hashes will be wrong in intermediate nodes.
-  dm_bht_set_verify_mode(&tree_, DM_BHT_FULL_REVERIFY);
 
   return true;
 }