diff --git a/core/includes/standard.inc b/core/includes/standard.inc
index 63f3d702fb53bc5bc3f7a8ff1fe81e089638bda2..0d5b9891456b40a7d30522f16b86add7f0605a2e 100644
--- a/core/includes/standard.inc
+++ b/core/includes/standard.inc
@@ -319,7 +319,6 @@ function standard_language_list() {
     'dz' => array('Dzongkha', 'རྫོང་ཁ'),
     'el' => array('Greek', 'Ελληνικά'),
     'en' => array('English', 'English'),
-    'en-gb' => array('English, British', 'English, British'),
     'eo' => array('Esperanto', 'Esperanto'),
     'es' => array('Spanish', 'Español'),
     'et' => array('Estonian', 'Eesti'),
@@ -329,7 +328,6 @@ function standard_language_list() {
     'fil' => array('Filipino', 'Filipino'),
     'fo' => array('Faeroese', 'Føroyskt'),
     'fr' => array('French', 'Français'),
-    'ga' => array('Irish', 'Gaeilge'),
     'gd' => array('Scots Gaelic', 'Gàidhlig'),
     'gl' => array('Galician', 'Galego'),
     'gsw-berne' => array('Swiss German', 'Schwyzerdütsch'),
@@ -339,7 +337,6 @@ function standard_language_list() {
     'hr' => array('Croatian', 'Hrvatski'),
     'ht' => array('Haitian Creole', 'Kreyòl ayisyen'),
     'hu' => array('Hungarian', 'Magyar'),
-    'hy' => array('Armenian', 'Õ€Õ¡ÕµÕ¥Ö€Õ¥Õ¶'),
     'id' => array('Indonesian', 'Bahasa Indonesia'),
     'is' => array('Icelandic', 'Íslenska'),
     'it' => array('Italian', 'Italiano'),
@@ -354,24 +351,19 @@ function standard_language_list() {
     'lo' => array('Lao', 'ພາສາລາວ'),
     'lt' => array('Lithuanian', 'Lietuvių'),
     'lv' => array('Latvian', 'Latviešu'),
-    'mfe' => array('Mauritian Creole', 'Kreol Morisyen'),
     'mg' => array('Malagasy', 'Malagasy'),
-    'mi' => array('Maori', 'Māori'),
     'mk' => array('Macedonian', 'Македонски'),
     'ml' => array('Malayalam', 'മലയാളം'),
     'mn' => array('Mongolian', 'монгол'),
     'mr' => array('Marathi', 'मराठी'),
-    'mt' => array('Maltese', 'Malti'),
     'my' => array('Burmese', 'ဗမာစကား'),
     'ne' => array('Nepali', 'नेपाली'),
     'nl' => array('Dutch', 'Nederlands'),
     'nb' => array('Norwegian Bokmål', 'Bokmål'),
     'nn' => array('Norwegian Nynorsk', 'Nynorsk'),
     'oc' => array('Occitan', 'Occitan'),
-    'or' => array('Oriya', 'ଓଡ଼ିଆ'),
     'pa' => array('Punjabi', 'ਪੰਜਾਬੀ'),
     'pl' => array('Polish', 'Polski'),
-    'pt' => array('Portuguese, International', 'Português, Internacional'),
     'pt-pt' => array('Portuguese, Portugal', 'Português, Portugal'),
     'pt-br' => array('Portuguese, Brazil', 'Português, Brasil'),
     'ro' => array('Romanian', 'Română'),
@@ -384,12 +376,10 @@ function standard_language_list() {
     'sq' => array('Albanian', 'Shqip'),
     'sr' => array('Serbian', 'Српски'),
     'sv' => array('Swedish', 'Svenska'),
-    'sw' => array('Swahili', 'Kiswahili'),
     'ta' => array('Tamil', 'தமிழ்'),
     'ta-lk' => array('Tamil, Sri Lanka', 'தமிழ், இலங்கை'),
     'te' => array('Telugu', 'తెలుగు'),
     'th' => array('Thai', 'ภาษาไทย'),
-    'ti' => array('Tigrinya', 'ትግርኛ'),
     'tr' => array('Turkish', 'Türkçe'),
     'tyv' => array('Tuvan', 'Тыва дыл'),
     'ug' => array('Uyghur', 'Уйғур'),