tdf#126972: The "file icon" button in the menubar is useless in the iOS app

In "real" Online, in a WOPI environment, it does something useful. But
not in the iOS app. So no need to have it at all.

Change-Id: I87a6b7badcba2899f850a1e15eae591e9ed8895c
Reviewed-on: https://gerrit.libreoffice.org/77742
Tested-by: Jenkins CollaboraOffice <jenkinscollaboraoffice@gmail.com>
Reviewed-by: Tor Lillqvist <tml@collabora.com>
Tested-by: Tor Lillqvist <tml@collabora.com>
(cherry picked from commit c5d6c7dd402da6987cd01f3c0759b28b3503d85c)
Reviewed-on: https://gerrit.libreoffice.org/77788
diff --git a/loleaflet/src/control/Control.Menubar.js b/loleaflet/src/control/Control.Menubar.js
index 3a845f9..41120cf 100644
--- a/loleaflet/src/control/Control.Menubar.js
+++ b/loleaflet/src/control/Control.Menubar.js
@@ -560,7 +560,7 @@ L.Control.Menubar = L.Control.extend({
		});
		$('#main-menu').attr('tabindex', 0);

		if (this._map._permission !== 'readonly') {
		if (!window.ThisIsTheiOSApp && this._map._permission !== 'readonly') {
			this._createFileIcon();
		}
	},