test: remove redundant before/after blocks

The enable! around hook handles cleanup automatically.

Author: joemsak

spec/lib/code_teams/testing_spec.rb

@@ -3,16 +3,6 @@
 CodeTeams::Testing.enable!
 
 RSpec.describe CodeTeams::Testing do
-  before do
-    CodeTeams.bust_caches!
-    described_class.reset!
-  end
-
-  after do
-    CodeTeams.bust_caches!
-    described_class.reset!
-  end
-
   describe '.create_code_team' do
     it 'adds the team to CodeTeams.all and CodeTeams.find' do
       team = described_class.create_code_team({ name: 'Temp Team', extra_data: { foo: { bar: 1 } } })