Replace find_package with find_dependency.

Author: andrew-hardin

cmake/Config.cmake.in

@@ -38,9 +38,8 @@
 
 @PACKAGE_INIT@
 
-if(NOT TARGET Threads::Threads)
-  find_package(Threads REQUIRED)
-endif()
+include(CMakeFindDependencyMacro)
+find_dependency(Threads REQUIRED)
 
 include("${CMAKE_CURRENT_LIST_DIR}/@[email protected]")
 check_required_components("@PROJECT_NAME@")