Quick delete keyframes - I need help to modification script

This code work for time range. I need to change this and use script for delete selection keyframes. This help me work quickly, and delete key without question any time “delete keyframes”.
If anyone can help?
Thank you!


class DELETE_KEYFRAMES_RANGE(bpy.types.Operator):
    bl_idname = "pose.delete_keyframes"
    bl_label = "Delete Keyframes"
    bl_options = {'REGISTER', 'UNDO'}
    bl_description = "Delete all keyframes for selected bones in a time range"

    @classmethod
    def poll(cls, context):
        obj = bpy.context.object
        return obj.type == 'ARMATURE' and obj.mode == 'POSE'

    def execute(self, context):
        wm = bpy.context.window_manager
        arm = bpy.context.object
        act = arm.animation_data.action
        delete = []

        # get selected bones names
        sel = [b.name for b in arm.data.bones if b.select]

        # get bone names from fcurve data_path
        for fcu in act.fcurves:
            name = fcu.data_path.split(sep='"', maxsplit=2)[1]

            # check if bone is selected and got keyframes in range
            if name in sel:
                for kp in fcu.keyframe_points:
                    if wm.del_range_start <= kp.co[0] <= wm.del_range_end:
                        delete.append((fcu.data_path, kp.co[0]))

        # delete keyframes
        for kp in delete:
            arm.keyframe_delete(kp[0], index=-1, frame=kp[1])

        context.scene.frame_set(context.scene.frame_current)
        return {'FINISHED'}

Hi.
I need a script like this. Did you find any solution?