DEV: Remove unused test (#20964)

spec/lib/validators/enable_invite_only_validator_spec.rb

@@ -1,30 +0,0 @@
-# frozen_string_literal: true
-
-RSpec.describe EnableInviteOnlyValidator do
-  subject { described_class.new }
-
-  context "when sso is enabled" do
-    before do
-      SiteSetting.discourse_connect_url = "https://example.com/sso"
-      SiteSetting.enable_discourse_connect = true
-    end
-
-    it "is valid when false" do
-      expect(subject.valid_value?("f")).to eq(true)
-    end
-
-    it "is isn't value for true" do
-      expect(subject.valid_value?("t")).to eq(false)
-      expect(subject.error_message).to eq(
-        I18n.t("site_settings.errors.discourse_connect_invite_only"),
-      )
-    end
-  end
-
-  context "when sso isn't enabled" do
-    it "is valid when true or false" do
-      expect(subject.valid_value?("f")).to eq(true)
-      expect(subject.valid_value?("t")).to eq(true)
-    end
-  end
-end