Fix CQS signal facebook-unused-include-check in fbcode/folly/lang

Reviewed By: yfeldblum

Differential Revision: D92504343

fbshipit-source-id: ff5d879836c4097101479232962e0ed41347c970

Author: generatedunixname1587093422349604

folly/lang/test/BitsTest.cpp

@@ -23,7 +23,6 @@
 #include <fmt/core.h>
 
 #include <folly/Random.h>
-#include <folly/container/span.h>
 #include <folly/portability/GTest.h>
 
 namespace folly {