Remove useless member functions Fl_XXX_Copy_Surface_Driver::w() and h()

src/drivers/GDI/Fl_GDI_Copy_Surface_Driver.cxx

@@ -35,8 +35,6 @@ protected:
   void set_current();
   void translate(int x, int y);
   void untranslate();
-  int w() {return width;}
-  int h() {return height;}
 };
 
 

src/drivers/Quartz/Fl_Quartz_Copy_Surface_Driver.H

@@ -37,8 +37,6 @@ protected:
   void set_current();
   void translate(int x, int y);
   void untranslate();
-  int w() {return width;}
-  int h() {return height;}
 };
 
 #endif /* Fl_Quartz_Copy_Surface_Driver_H */

src/drivers/Xlib/Fl_Xlib_Copy_Surface_Driver.cxx

@@ -37,8 +37,6 @@ protected:
   void set_current();
   void translate(int x, int y);
   void untranslate();
-  int w() {return width;}
-  int h() {return height;}
 };