Removed the code related to gtk_window_set_icon_list. This code doesn't gain us much and will have even less impact in the future.
Testing Done:
Compiled, ran, verified that calling `gtk_window_set_icon_list(window, NULL);` doesn't crash. I couldn't actually check what a window manager will display because my window manager doesn't show icons.
Reviewed at https://reviews.imfreedom.org/r/77/
# SOME DESCRIPTIVE TITLE.
# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
# This file is distributed under the same license as the PACKAGE package.
#
# Translators:
# AbdulAziz AlSharif <a.a-a.s@hotmail.com>, 2007
# aboo amnghr, 2014
# Afief Halumi <Afief.h@gmail.com>, 2007
# Ahmad Gharbeia <gharbeia@gmail.com>, 2008
# Hafid BENHADRIA <ghosn@php4arab.info>, 2003
# Khaled Hosny <khaledhosny@eglug.org>, 2007-2008
# Mohamed Magdy <alnokta@yahoo.com>, 2006
# Youssef Chahibi <chahibi@gmail.com>, 2007
# محمد سعد Mohamed SAAD <metehyi@free.fr>, 2006
# محيي الدين <tx99h4@hotmail.com>, 2014-2017
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"POT-Creation-Date: 2019-11-10 20:23-0500\n"
"PO-Revision-Date: 2017-09-19 12:43+0000\n"
"Last-Translator: محيي الدين <tx99h4@hotmail.com>\n"