message: Remove unused SafeVector container
  Summary: Cruft from an earlier change.
diff: @@ -26,13 +26,6 @@ namespace mog = method_override_graph;
  namespace {
  -template <typename T>
  -struct SafeVector {
  - std::mutex mutex;
  - std::vector<T>* vector;
  - SafeVector(std::vector<T>* v) : vector(v) {}
  -};
  -
  static ReachableObject SEED_SINGLETON{};
  DexMethod* resolve(const DexMethodRef* method, const DexClass* cls) {
  