Clear the kmls from the map

def clearkml(self):
        '''Clear the kmls from the map'''
        #go through all the current layers and remove them
        for layer in self.curlayers:
            self.mpstate.map.remove_object(layer)
        for layer in self.curtextlayers:
            self.mpstate.map.remove_object(layer)
        self.allayers = []
        self.curlayers = []
        self.alltextlayers = []
        self.curtextlayers = []
        self.menu_needs_refreshing = True