Remove random running specs; up tests

spec/spec_helper.rb

@@ -12,8 +12,6 @@
   # Disable RSpec exposing methods globally on `Module` and `main`
   config.disable_monkey_patching!
 
-  config.order = :random
-
   config.expect_with :rspec do |c|
     c.syntax = :expect
   end

spec/yabeda/group_spec.rb

@@ -2,14 +2,9 @@
 
 RSpec.describe Yabeda::Group do
   let(:name) { nil }
-
   let(:group) { described_class.new(name) }
 
-  before do
-    Yabeda.groups[name] = group
-  end
-
-  after { Yabeda.reset! }
+  before { Yabeda.groups[name] = group }
 
   describe "default tags" do
     context "when on the top level group" do