Remove copy ctor definitions. These are implicit.

The definition of implicit copy assignment operator for a class
is deprecated because it has a user-declared copy constructor
as issued by -Wdeprecated-copy warning.

Since the definitions of default copy constructors are implictly
created by the compiler (as well as the copy assignments)
the definitions are not needed.

GeoLib/AABB.h

@@ -66,8 +66,6 @@ public:
         enlarge();
     }
 
-    AABB(AABB const&) = default;
-
     /**
      * Construction of object using input iterators. In contrast to give a
      * vector this approach is more generic. You can use every (stl) container

MathLib/LinAlg/Eigen/EigenVector.h

@@ -41,9 +41,6 @@ public:
     /// @param length number of rows
     explicit EigenVector(IndexType length) : vec_(length) {}
 
-    /// copy constructor
-    EigenVector(EigenVector const& src) = default;
-
     /// return a vector length
     IndexType size() const { return static_cast<IndexType>(vec_.size()); }