Revert "wesnoth: pin to boost183 to restore the build"

No longer required with 1.18.3.

This reverts commit e780bc8.

Author: emilazy

pkgs/top-level/all-packages.nix

@@ -16918,8 +16918,6 @@ with pkgs;
 
   wesnoth = callPackage ../games/wesnoth {
     inherit (darwin.apple_sdk.frameworks) Cocoa Foundation;
-    # fails to build against latest boost
-    boost = boost183;
     # wesnoth requires lua built with c++, see https://github.com/wesnoth/wesnoth/pull/8234
     lua = lua5_4.override {
       postConfigure = ''