chore: remove Node.js Ecosystem HackerOne program

The Node.js Ecosystem Hackerone program has since closed. This commit
removes remaining references to this program.

see: nodejs/node#42144
Signed-off-by: Rifa Achrinza <25147899+achrinza@users.noreply.github.com>

SECURITY.md

@@ -25,7 +25,7 @@ We consider the security of our systems a top priority. But no matter how much e
 
 If you discover a security vulnerability, please use one of the following means of communications to report it to us:
 
-- Report the security issue to the Node.js Security Working Group through the [HackerOne program](https://hackerone.com/nodejs-ecosystem) for ecosystem modules on npm, or to [Snyk Security Team](https://snyk.io/vulnerability-disclosure). They will help triage the security issue and work with all involved parties to remediate and release a fix.
+- Report the security issue to [Snyk Security Team](https://snyk.io/vulnerability-disclosure). They will help triage the security issue and work with all involved parties to remediate and release a fix.
 
 Note that time-frame and processes are subject to each program’s own policy.