ntfs3: Drop pointless sync_mapping_buffers() and invalidate_inode_buffers() calls

ntfs3: Drop pointless sync_mapping_buffers() and invalidate_inode_buffers() calls

ntfs3 never calls mark_buffer_dirty_inode() and thus its metadata
buffers list is always empty. Drop the pointless sync_mapping_buffers()
and invalidate_inode_buffers() calls.

CC: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
CC: ntfs3@lists.linux.dev
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20260326095354.16340-45-jack@suse.cz
Signed-off-by: Christian Brauner <brauner@kernel.org>