bug 162457 : get rid of obsolete entries in charsetData.properties (r=smontagu, sr=bz)

intl/uconv/src/charsetData.properties

@@ -49,10 +49,6 @@
 ##
 ## charset_name.LangGroup = 
 ##
-## charset_name.MIMEHeaderEncodingMethod =
-##
-## charset_name.MIMEMailCharset =
-##
 ## charset_name.isMultibyte = multi byte charsets
 
 t.61-8bit.notForBrowser             = true
@@ -187,10 +183,6 @@ x-sun-unicode-india-0.LangGroup    = x-devanagari
 x-tscii.LangGroup                = x-tamil
 x-tamilttf-0.LangGroup             = x-tamil
 
-utf-8.MIMEHeaderEncodingMethod  = B
-utf-8.MIMEMailCharset           = utf-8
-
-
 iso-2022-jp.isMultibyte     = true
 shift_jis.isMultibyte       = true
 euc-jp.isMultibyte          = true