Remove unused-variable in language_technology/jedi/moses/TranslationO…

…ptionCollectionLattice.cpp +3

Summary:
LLVM-15 has a warning `-Wunused-variable` which we treat as an error because it's so often diagnostic of a code issue. Unused variables can compromise readability or, worse, performance.

This diff either (a) removes an unused variable and, possibly, it's associated code or (b) qualifies the variable with `[[maybe_unused]]`.

#buildsonlynotests - Builds are sufficient

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Reviewed By: wuyuoss

Differential Revision: D66143547

fbshipit-source-id: be5d1696be4454358dd919e283f5e2d44a1c1f73

opensfm/src/third_party/akaze/lib/AKAZE.cpp

@@ -410,7 +410,6 @@ void AKAZE::Find_Scale_Space_Extrema(std::vector<cv::KeyPoint>& kpts) {
           if (kpts[i].response < kpts[j].response) {
             float dx_ = kpts[j].pt.x - kpts[i].pt.x;
             float dy_ = kpts[j].pt.y - kpts[i].pt.y;
-            float sigma_ = kpts[j].size;
             float radius_ = dx_ * dx_ + dy_ * dy_;  // TODO(pau) use sigma to compute a 3d radius
             if (radius_ < radius) {
               radius = radius_;