Remove unused previous_version method

Signed-off-by: Balasankar "Balu" C <[email protected]>

Author: balasankarc

lib/gitlab/build/info.rb

@@ -90,12 +90,6 @@ def gitlab_rails_ref(prepend_version: true)
         Gitlab::Version.new('gitlab-rails').print(prepend_version)
       end
 
-      def previous_version
-        # Get the second latest git tag
-        previous_tag = Info::Git.latest_stable_tag(level: 2)
-        previous_tag.tr("+", "-")
-      end
-
       def gitlab_rails_project_path
         if Gitlab::Util.get_env('CI_SERVER_HOST') == 'dev.gitlab.org'
           package == "gitlab-ee" ? 'gitlab/gitlab-ee' : 'gitlab/gitlabhq'

spec/lib/gitlab/build/info_spec.rb

@@ -107,16 +107,6 @@
     end
   end
 
-  describe '.previous_version' do
-    it 'detects previous version correctly' do
-      allow(Build::Info::Git).to receive(:`).and_call_original
-      allow(Build::Info::Git).to receive(:`).with("git describe --exact-match 2>/dev/null").and_return('10.4.0+ee.0')
-      allow(Build::Info::Git).to receive(:`).with(/git -c versionsort/).and_return("10.4.0+ee.0\n10.3.5+ee.0")
-
-      expect(described_class.previous_version).to eq("10.3.5-ee.0")
-    end
-  end
-
   describe '.gitlab_rails repo' do
     describe 'with alternative sources channel selected' do
       before do