htaccess 301 redirect - Remove query string (QSA)
Solution 1:
You can use this rule:
RewriteRule ^menu\.php$ /new-page-name? [L,R=301]
Take note of trailing ? in the end which is used for stripping off any existing query string in the original URI.
Solution 2:
In addition to anubhava's answer you can alternatively use the QSD flag from Apache 2.4.0
RewriteRule ^menu\.php$ /new-page-name [L,R=301,QSD]
http://httpd.apache.org/docs/current/en/rewrite/flags.html#flag_qsd