chore: remove netlify package rules (#267)

Co-authored-by: ehmicky <ehmicky@users.noreply.github.com>

Author: erezrokah

renovate.json5

@@ -5,19 +5,9 @@
   masterIssue: true,
   automerge: false,
   packageRules: [
-    {
-      packagePatterns: ['^@netlify', '^netlify'],
-      groupName: 'netlify packages',
-      schedule: null,
-    },
     {
       // Those cannot be upgraded to a major version until we drop support for Node 8
-      packageNames: [
-        'ava',
-        'nock',
-        'p-map',
-        'tempy',
-      ],
+      packageNames: ['ava', 'nock', 'p-map', 'tempy'],
       major: {
         enabled: false,
       },