dev #71435 remove piwik submodule link and icons

.gitmodules

@@ -7,9 +7,6 @@
 [submodule "library/Redmine"]
 	path = library/Redmine
 	url = http://git.afi-sa.fr/afi/php-redmine-api.git
-[submodule "library/piwik-php-tracker"]
-	path = library/piwik-php-tracker
-	url = http://git.afi-sa.fr/afi/piwik-php-tracker.git
 [submodule "library/iCal"]
 	path = library/iCal
 	url = http://git.afi-sa.net/afi/iCal.git

public/admin/skins/bokeh74/config.json

@@ -23,7 +23,6 @@
     "genres": "icons/menu/genres_24.png",
     "translations": "icons/menu/traductions_24.png",
     "failed_searches": "icons/menu/infructueux_24.png",
-    "piwik_stats": "icons/menu/piwik_24.png",
     "matomo_stats": "icons/menu/matomo_24.png",
     "record_views": "icons/menu/stats_visu_24.png",
     "top_record_views": "icons/menu/stats_palmares_24.png",

public/admin/skins/retro/config.json

@@ -23,7 +23,6 @@
     "genres": "icons/menu/genres_24.png",
     "translations": "icons/menu/traductions_24.png",
     "failed_searches": "icons/menu/infructueux_24.png",
-    "piwik_stats": "icons/menu/piwik_24.png",
     "matomo_stats": "icons/menu/matomo_24.png",
     "record_views": "icons/menu/stats_visu_24.png",
     "top_record_views": "icons/menu/stats_palmares_24.png",