encdb.h.tmpl: remove stale macros

* template/encdb.h.tmpl: remove stale ENCIDX macros which never been
  used, ENCINDEX enums is used.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43364 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

template/encdb.h.tmpl

@@ -82,14 +82,10 @@ encdirs.each do |encdir|
 end
 encodings.each_with_index do |e, i|
 %>ENC_DEFINE("<%=e%>");
-#define ENCIDX_<%=e.tr('-', '_')%> <%=i%>
 % end
 % encidx = encodings.size - 1
 % lines.each do |line|
 <%=line%>
-%  if /^ENC_(?:DUMMY(?:_UNICODE)?|REPLICATE)\(\s*"([^"]+)/ =~ line
-#define ENCIDX_<%=$1.tr('-', '_')%> <%=encidx+=1%>
-%  end
 % end
 
 #define ENCODING_COUNT <%=count%>