deprecated explicit export CMake variables (in target)

Author: willat343

cmake/config.cmake.in

@@ -1,6 +1,3 @@
 @PACKAGE_INIT@
 include("${CMAKE_CURRENT_LIST_DIR}/@PROJECT_NAME@-export.cmake")
 check_required_components("@PROJECT_NAME@")
-
-set_and_check(@PROJECT_NAME@_INCLUDE_DIRS "${PACKAGE_PREFIX_DIR}/@CMAKE_INSTALL_INCLUDEDIR@")
-set(@PROJECT_NAME@_LIBRARIES "@PROJECT_NAME@")