Remove apparently unused helper method

Author: lizmat

src/QRegex/Cursor.nqp

@@ -341,15 +341,6 @@ role NQPMatchRole is export {
 #        self;
 #    }
 
-    method !APPEND_TO_ORIG($value) {
-        my $orig := nqp::getattr($!shared, ParseShared, '$!orig');
-        $orig := $orig ~ $value;
-        nqp::bindattr($!shared, ParseShared, '$!orig', $orig);
-        my $target := nqp::getattr_s($!shared, ParseShared, '$!target');
-        $target := $target ~ $value;
-        nqp::bindattr_s($!shared, ParseShared, '$!target', $target);
-    }
-
     my $NO_CAPS := nqp::hash();
     method CAPHASH() {
         my $caps    := nqp::hash();