Fix broken CMake config exports.

--- sources/pyside6/libpyside/CMakeLists.txt.orig	2025-10-06 08:58:41 UTC
+++ sources/pyside6/libpyside/CMakeLists.txt
@@ -159,9 +159,6 @@ configure_package_config_file(
 )
 
 # Install-tree / wheel configuration
-set(PYSIDE_PYTHONPATH "")
-set(PYSIDE_TYPESYSTEMS "typesystems")
-set(PYSIDE_GLUE "glue")
 set(PYSIDE_SOVERSION "${pyside6_library_so_version}")
 
 configure_package_config_file(