Trim ICU data to reduce the download size/memory usage

icu52/source/data/region/en.txt

Index: icu52/source/data/region/en.txt
===================================================================
--- icu52/source/data/region/en.txt	(revision 259715)
+++ icu52/source/data/region/en.txt	(working copy)
@@ -11,35 +11,6 @@
  */
 en{
     Countries{
-        001{"World"}
-        002{"Africa"}
-        003{"North America"}
-        005{"South America"}
-        009{"Oceania"}
-        011{"Western Africa"}
-        013{"Central America"}
-        014{"Eastern Africa"}
-        015{"Northern Africa"}
-        017{"Middle Africa"}
-        018{"Southern Africa"}
-        019{"Americas"}
-        021{"Northern America"}
-        029{"Caribbean"}
-        030{"Eastern Asia"}
-        034{"Southern Asia"}
-        035{"South-Eastern Asia"}
-        039{"Southern Europe"}
-        053{"Australasia"}
-        054{"Melanesia"}
-        057{"Micronesian Region"}
-        061{"Polynesia"}
-        142{"Asia"}
-        143{"Central Asia"}
-        145{"Western Asia"}
-        150{"Europe"}
-        151{"Eastern Europe"}
-        154{"Northern Europe"}
-        155{"Western Europe"}
         419{"Latin America"}
         AC{"Ascension Island"}
         AD{"Andorra"}