libfstab: Unexport InRecovery()

It was accidentally moved to the public header when I was previously
refactoring the code. It hasn't caused any harm yet, but we probably
don't want to export this, too.

Bug: 293695109
Test: build
Change-Id: Id81c802cc6cc697c5a4204638aa467966bea1562
diff --git a/fs_mgr/fs_mgr_priv.h b/fs_mgr/fs_mgr_priv.h
index c3b18c8..678dd69 100644
--- a/fs_mgr/fs_mgr_priv.h
+++ b/fs_mgr/fs_mgr_priv.h
@@ -109,6 +109,9 @@
 
 namespace android {
 namespace fs_mgr {
+
 bool UnmapDevice(const std::string& name);
+bool InRecovery();
+
 }  // namespace fs_mgr
 }  // namespace android
diff --git a/fs_mgr/include_fstab/fstab/fstab.h b/fs_mgr/include_fstab/fstab/fstab.h
index 80b45ba..9cb1546 100644
--- a/fs_mgr/include_fstab/fstab/fstab.h
+++ b/fs_mgr/include_fstab/fstab/fstab.h
@@ -131,7 +131,5 @@
 // expected name.
 std::string GetVerityDeviceName(const FstabEntry& entry);
 
-bool InRecovery();
-
 }  // namespace fs_mgr
 }  // namespace android