removes audit export system test

Author: john-huang-121

spec/system/audit_system_spec.rb

@@ -135,11 +135,6 @@
     context "when viewing the audits index" do
       subject { audits_path }
 
-      it "should have the 'Export Audits' button" do
-        visit subject
-        expect(page).to have_content(" Export Audits")
-      end
-
       it "should be able to filter the #index by storage location" do
         storage_location2 = create(:storage_location, name: "there", organization: organization)
         create(:audit, organization: organization, storage_location: storage_location)