Remove an errant binary character

Change-Id: I22b6ef8975c3c8a34e7f96ca89e4ec90461f453c

internal/ceres/covariance_impl.cc

diff --git a/internal/ceres/covariance_impl.cc b/internal/ceres/covariance_impl.cc
index d77e5e1..8e13524 100644
--- a/internal/ceres/covariance_impl.cc
+++ b/internal/ceres/covariance_impl.cc
@@ -722,7 +722,7 @@
 
 #if !(defined(CERES_USE_TBB) || defined(CERES_USE_CXX11_THREADS))
   ThreadTokenProvider thread_token_provider(num_threads);
-#endif // !(defined(CERES_USE_TBB) || defined(CERES_USE_CXX11_THREADS))
+#endif // !(defined(CERES_USE_TBB) || defined(CERES_USE_CXX11_THREADS))
 
 #ifdef CERES_USE_OPENMP
 #pragma omp parallel for num_threads(num_threads) schedule(dynamic)