fs_mgr: remove FDE-specific FS_MGR_MNTALL codes

Remove these codes, now that neither fs_mgr nor init uses them anymore.

Bug: 191796797
Change-Id: I97451ed8b83043a4035fc8cf8bfbb95ee60afd83
diff --git a/fs_mgr/include/fs_mgr.h b/fs_mgr/include/fs_mgr.h
index 5ae4422..29a5e60 100644
--- a/fs_mgr/include/fs_mgr.h
+++ b/fs_mgr/include/fs_mgr.h
@@ -56,9 +56,6 @@
 #define FS_MGR_MNTALL_DEV_NEEDS_METADATA_ENCRYPTION 6
 #define FS_MGR_MNTALL_DEV_FILE_ENCRYPTED 5
 #define FS_MGR_MNTALL_DEV_NEEDS_RECOVERY 4
-#define FS_MGR_MNTALL_DEV_NEEDS_ENCRYPTION 3
-#define FS_MGR_MNTALL_DEV_MIGHT_BE_ENCRYPTED 2
-#define FS_MGR_MNTALL_DEV_NOT_ENCRYPTED 1
 #define FS_MGR_MNTALL_DEV_NOT_ENCRYPTABLE 0
 #define FS_MGR_MNTALL_FAIL (-1)