biber-for-tectonic: move to pkgs/by-name

pkgs/tools/typesetting/tectonic/default.nix

@@ -2,7 +2,7 @@
   This file provides the `tectonic-unwrapped` package. On the other hand,
   the `tectonic` package is defined in `../tectonic/package.nix`, by wrapping
   - [`tectonic-unwrapped`](./default.nix) i.e. this package, and
-  - [`biber-for-tectonic`](./biber.nix),
+  - [`biber-for-tectonic`](../../bi/biber-for-tectonic/package.nix),
     which provides a compatible version of `biber`.
 */
 

pkgs/top-level/all-packages.nix

@@ -2677,8 +2677,6 @@ with pkgs;
   beetsPackages = lib.recurseIntoAttrs (callPackage ../tools/audio/beets { });
   inherit (beetsPackages) beets beets-unstable;
 
-  biber-for-tectonic = callPackage ../tools/typesetting/tectonic/biber.nix { };
-
   binlore = callPackage ../development/tools/analysis/binlore { };
 
   birdfont = callPackage ../tools/misc/birdfont { };