Fixed post merge issues

include/aidge/backend/cpu/data/TensorImpl.hpp

@@ -51,11 +51,8 @@ public:
         return std::make_shared<TensorImpl_cpu<T>>(device, length);
     }
 
-    inline std::size_t size() const noexcept override final { return mData.size(); }
     inline std::size_t scalarSize() const noexcept override final { return sizeof(T); }
 
-    std::size_t scalarSize() const override { return sizeof(T); }
-
     void copy(const void *src, NbElts_t length, NbElts_t offset = 0) override final {
         const T* srcT = static_cast<const T *>(src);
         T* dstT = static_cast<T *>(rawPtr(offset));