[2157] revert change by mistake

src/lib/dns/gen-rdatacode.py.in

@@ -34,10 +34,6 @@ class_definitions = ''
 classdir_mtime = 0
 rdatadef_mtime = 0
 rdatahdr_mtime = 0
-localstatedir='@@LOCALSTATEDIR@@'
-localstatedir2='@localstatedir@'
-builddir='@@BUILDDIR@@'
-builddir2='@builddir@'
 heading_txt = '''///////////////
 ///////////////
 ///////////////   THIS FILE IS AUTOMATICALLY GENERATED BY gen-rdatacode.py.