libsnapshot: fix warnings

Fix unused header warning

Test: th
Change-Id: I5c9f22f3f74d6ca44e738e1dc8e9fe146749857f
diff --git a/fs_mgr/libsnapshot/snapshot.cpp b/fs_mgr/libsnapshot/snapshot.cpp
index e6c4de6..1738f7e 100644
--- a/fs_mgr/libsnapshot/snapshot.cpp
+++ b/fs_mgr/libsnapshot/snapshot.cpp
@@ -24,7 +24,6 @@
 #include <filesystem>
 #include <optional>
 #include <thread>
-#include <unordered_set>
 
 #include <android-base/file.h>
 #include <android-base/logging.h>
@@ -46,7 +45,6 @@
 #include <android/snapshot/snapshot.pb.h>
 #include <libsnapshot/snapshot_stats.h>
 #include "device_info.h"
-#include "libsnapshot_cow/parser_v2.h"
 #include "partition_cow_creator.h"
 #include "snapshot_metadata_updater.h"
 #include "utility.h"
@@ -3246,7 +3244,7 @@
             compression_algorithm = "gz";
         }
         LOG(INFO) << "using compression algorithm: " << compression_algorithm
-                   << ", max compressible block size: " << compression_factor;
+                  << ", max compressible block size: " << compression_factor;
     }
 
     PartitionCowCreator cow_creator{