flake.lib: drop unused function

flake/lib/default.nix

@@ -20,24 +20,6 @@ lib: rec
       )
       moduleList);
 
-  # from: https://github.com/NixOS/nix/issues/3759
-  stripeTabs = text:
-    let
-      # Whether all lines start with a tab (or is empty)
-      shouldStripTab = lines: builtins.all (line: (line == "") || (lib.strings.hasPrefix "  " line)) lines;
-      # Strip a leading tab from all lines
-      stripTab = lines: builtins.map (line: lib.strings.removePrefix "  " line) lines;
-      # Strip tabs recursively until there are none
-      stripTabs = lines: if (shouldStripTab lines) then (stripTabs (stripTab lines)) else lines;
-    in
-      # Split into lines. Strip leading tabs. Concat back to string.
-      builtins.concatStringsSep "\n" (stripTabs (lib.strings.splitString "\n" text));
-  
-  # find an element in a list, return the index
-  findIndex = e: list:
-    let findIndex_ = i: list: if (builtins.elemAt list i) == e then i else findIndex_ (i + 1) list;
-    in findIndex_ 0 list;
-
   # return a list of path, including:
   # - all .nix file in the directory except for default.nix
   # - all directories containing a default.nix