doc,meta: remove wait period for npm pull requests

Treat npm pull requests like all other pull requests. Remove special
extended wait period for landing.

PR-URL: #30329
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Beth Griggs <Bethany.Griggs@uk.ibm.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

doc/guides/maintaining-npm.md

@@ -4,10 +4,6 @@ New pull requests should be opened when a "next" version of npm has
 been released. Once the "next" version has been promoted to "latest"
 the PR should be updated as necessary.
 
-One week after the "latest" release has been promoted, it can land on master
-assuming no major regressions are found. There are no additional constraints
-for Semver-Major releases.
-
 The specific Node.js release streams the new version will be able to land into
 are at the discretion of the release and LTS teams.