Migrate to the new clang lib dir

Test: presubmit
Bug: 218706358
Change-Id: I0e78183c4db69a829a90e248252fdbfce98cad0f
diff --git a/build/makevars.go b/build/makevars.go
index 0606bab..9521605 100644
--- a/build/makevars.go
+++ b/build/makevars.go
@@ -35,7 +35,6 @@
 		"bin/llvm-dwarfdump",
 		"bin/llvm-objdump",
 		"lib/libc++.so.1",
-		"lib64/libc++.so.1",
 	}
 )