Fix double getImpl due to bad merge.

include/aidge/operator/Operator.hpp

@@ -128,14 +128,6 @@ public:
         return mImpl;
     }
 
-    /**
-     * @brief Get the OperatorImpl of the Operator
-     *
-     */
-    std::shared_ptr<OperatorImpl> getImpl(){
-        return mImpl;
-    }
-
     /**
      * @brief Minimum amount of data from a specific input for one computation pass.
      * @param inputIdx Index of the input analysed.