Fix Rubocop errors

app/controllers/import/bitbucket_server_controller.rb

@@ -11,7 +11,7 @@ class Import::BitbucketServerController < Import::BaseController
   # Repository names are limited to 128 characters. They must start with a
   # letter or number and may contain spaces, hyphens, underscores, and periods.
   # (https://community.atlassian.com/t5/Answers-Developer-Questions/stash-repository-names/qaq-p/499054)
-  VALID_BITBUCKET_CHARS = %r(\A[a-zA-z0-9\-_\.\s]*$)
+  VALID_BITBUCKET_CHARS = /\A[a-zA-z0-9\-_\.\s]*$/
 
   SERVER_ERRORS = [SocketError,
                    OpenSSL::SSL::SSLError,

lib/bitbucket_server/representation/repo.rb

@@ -18,7 +18,7 @@ module BitbucketServer
       end
 
       def browse_url
-        link = raw.dig('project', 'links', 'self').first.fetch('href')
+        raw.dig('project', 'links', 'self').first.fetch('href')
       end
 
       def clone_url