docs: I have decided that I don't care

There's just too many ways to create invalid tree (such as implementing
a custom trait incorrectly for example) that it's not worth the efforts

Author: KSXGitHub

src/hardlink/deduplicate.rs

@@ -1,10 +1,5 @@
 use crate::{data_tree::DataTree, os_string_display::OsStringDisplay, size};
 
-// TODO:
-// Problem: It is possible for the users to call deduplicate twice on 1 data tree, which is unsound.
-// Potential solution #1: Consider adding the data tree to the deduplication record as hidden field until it is processed.
-// Potential solution #2: Perhaps the deduplication should be done in FsTreeBuilder itself.
-
 /// Ability to correct the sizes in a [`DataTree`] by reducing the size of recorded shared links.
 ///
 /// The input tree is assumed to be not yet deduplicated.