Leave default AR as is, https://bugs.gentoo.org/732096

diff -r 419bf3de54e5 CMakeLists.txt
--- a/CMakeLists.txt	Sat Oct 24 19:50:25 2020 +0000
+++ b/CMakeLists.txt	Sat Oct 24 19:50:53 2020 +0000
@@ -390,8 +390,6 @@
 	MESSAGE("Using ar, ranlib, and default linker")
 	find_program(NON_LTO_AR NAMES ar)
 	find_program(NON_LTO_RANLIB NAMES ranlib)
-	set(CMAKE_AR "${NON_LTO_AR}" CACHE STRING "Does not support LTO" FORCE)
-	set(CMAKE_RANLIB "${NON_LTO_RANLIB}" CACHE STRING "Does not support LTO" FORCE)
 endif()
 MARK_AS_ADVANCED(LTO_AR LTO_RANLIB NON_LTO_AR NON_LTO_RANLIB)