Fix build error: unused variable 'BoringBits'

Bug: 32780232
Bug: 20260865
Bug: 21597073

Test: build aosp_x86_64-user
      build aosp_x86_64-eng; run slang/tests

Merged-In: Ie23fafd82323080be7d4f1287974079b370e2e94

Change-Id: If966bf74cbe295b9168b83f86c4fd45850de534e
(cherry picked from commit 1fc96fa576a4daec3e8fc88d72b948006a20b6f2)
1 file changed