Remove unnecessary TRANSFORM::operator=

The default assignment operator is significantly more efficient - often
inlined, and has no branches...

eeschema/transform.cpp

@@ -2,7 +2,7 @@
  * This program source code file is part of KiCad, a free EDA CAD application.
  *
  * Copyright (C) 2010 Wayne Stambaugh <stambaughw@verizon.net>
- * Copyright (C) 2015 KiCad Developers, see CHANGELOG.TXT for contributors.
+ * Copyright (C) 2015-2017 KiCad Developers, see AUTHORS.txt for contributors.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -29,19 +29,6 @@
 #include <class_eda_rect.h>
 
 
-TRANSFORM& TRANSFORM::operator=( const TRANSFORM& aTransform )
-{
-    if( this == &aTransform )       // Check for self assingnemt;
-        return *this;
-
-    x1 = aTransform.x1;
-    y1 = aTransform.y1;
-    x2 = aTransform.x2;
-    y2 = aTransform.y2;
-    return *this;
-}
-
-
 bool TRANSFORM::operator==( const TRANSFORM& aTransform ) const
 {
     return ( x1 == aTransform.x1 &&

eeschema/transform.h

@@ -6,7 +6,7 @@
  * This program source code file is part of KiCad, a free EDA CAD application.
  *
  * Copyright (C) 2007-2010 Wayne Stambaugh <stambaughw@verizon.net>
- * Copyright (C) 2007 KiCad Developers, see change_log.txt for contributors.
+ * Copyright (C) 2007-2017 KiCad Developers, see AUTHORS.txt for contributors.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -57,8 +57,6 @@ public:
 
     TRANSFORM( int ax1, int ay1, int ax2, int ay2 ) : x1( ax1 ), y1( ay1 ), x2( ax2 ), y2( ay2 ) {}
 
-    TRANSFORM& operator=( const TRANSFORM& aTransform );
-
     bool operator==( const TRANSFORM& aTransform ) const;
 
     bool operator!=( const TRANSFORM& aTransform ) const { return !( *this == aTransform ); }