fix: remove duplicate fallback block in package_fetcher

Author: Sunrisepeak

src/pm/package_fetcher.cppm

@@ -627,28 +627,6 @@ Fetcher::resolve_xpkg_path(std::string_view target,
                 }
             }
         }
-        if (!std::filesystem::exists(verdir)) {
-            // xlings may have installed the package into its own global home
-            // rather than the mcpp sandbox. Try to copy it from the global
-            // xlings data directory.
-            auto xlings_home_env = std::getenv("HOME");
-#if defined(_WIN32)
-            if (!xlings_home_env) xlings_home_env = std::getenv("USERPROFILE");
-#endif
-            if (xlings_home_env) {
-                auto globalXpkgs = std::filesystem::path(xlings_home_env)
-                    / ".xlings" / "data" / "xpkgs"
-                    / verdir.parent_path().filename()
-                    / verdir.filename();
-                std::error_code ec;
-                if (std::filesystem::exists(globalXpkgs, ec)) {
-                    std::filesystem::create_directories(verdir.parent_path(), ec);
-                    std::filesystem::copy(globalXpkgs, verdir,
-                        std::filesystem::copy_options::recursive
-                        | std::filesystem::copy_options::overwrite_existing, ec);
-                }
-            }
-        }
         if (!std::filesystem::exists(verdir)) {
             return std::unexpected(CallError{
                 std::format("xpkg payload missing: {}", verdir.string())});