Bug 1433036 - FreeBSD bootstrap: add npm for linting after bug 1433036. r=froydnj

Downstream npm package already depends node package, no need to
specify it explicitly. Also, node package refers to the latest NodeJS
but npm package can be built against an older version.

MozReview-Commit-ID: KeuSFEKeStw

--HG--
extra : rebase_source : ac3ab14519f4edd8bcb5b77cad64eeaed16d2751

python/mozboot/mozboot/freebsd.py

@@ -19,7 +19,7 @@ class FreeBSDBootstrapper(BaseBootstrapper):
             'gmake',
             'gtar',
             'mercurial',
-            'node',
+            'npm',
             'pkgconf',
             'py%s%s-sqlite3' % sys.version_info[0:2],
             'rust',