Remove trivial copy constructors and assignment operators

Thanks @sfan5 for patch for Mintest: 4931b34625
Forum: https://irrlicht.sourceforge.io/forum/viewtopic.php?f=2&t=52819
Note - patch is not applied exaclty yet. SMaterial and matrix4 still missing (might be applied later).
Also patch was based on older Irrlicht and we removed a few already earlier this year (around r6280).


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6355 dfc29bdd-3216-0410-991c-e03cc46cb475

include/vector2d.h

@@ -27,8 +27,6 @@ public:
 	vector2d(T nx, T ny) : X(nx), Y(ny) {}
 	//! Constructor with the same value for both members
 	explicit vector2d(T n) : X(n), Y(n) {}
-	//! Copy constructor
-	vector2d(const vector2d<T>& other) : X(other.X), Y(other.Y) {}
 
 	vector2d(const dimension2d<T>& other) : X(other.Width), Y(other.Height) {}
 
@@ -36,8 +34,6 @@ public:
 
 	vector2d<T> operator-() const { return vector2d<T>(-X, -Y); }
 
-	vector2d<T>& operator=(const vector2d<T>& other) { X = other.X; Y = other.Y; return *this; }
-
 	vector2d<T>& operator=(const dimension2d<T>& other) { X = other.Width; Y = other.Height; return *this; }
 
 	vector2d<T> operator+(const vector2d<T>& other) const { return vector2d<T>(X + other.X, Y + other.Y); }