Move KICAD_T[] to std::initializer_list<KICAD_T>.

pcbnew/python/swig/board.i

@@ -143,12 +143,6 @@ HANDLE_EXCEPTIONS(BOARD::TracksInNetBetweenPoints)
         except:
             self.this = this
 
-    # Convert these to lists to keep users from using them to delete
-    # items in the iterable while looping over it
-    def GetFootprints(self):          return list(self.Footprints())
-    def GetDrawings(self):            return list(self.Drawings())
-    def GetTracks(self):              return list(self.Tracks())
-
     def Save(self,filename):
         return SaveBoard(filename,self)