removing National from L52 PE.po, ommited by mistake previously

Author: kplrm

holidays/locale/en_US/LC_MESSAGES/PE.po

@@ -49,7 +49,7 @@ msgstr "Labor Day"
 
 #. Battle of Arica and Flag Day.
 msgid "Batalla de Arica y Día de la Bandera"
-msgstr "Battle of Arica and National Flag Day"
+msgstr "Battle of Arica and Flag Day"
 
 #. Saint Peter and Saint Paul's Day.
 msgid "San Pedro y San Pablo"