Fix circleci test version

Author: ishikawa999

.circleci/config.yml

@@ -131,29 +131,4 @@ workflows:
           redmine_version: '4.1.3'
           ruby_version: '2.6'
           database: 'sqlite3'
-      - run-tests:
-          redmine_version: '4.0.9'
-          ruby_version: '2.6'
-          database: 'pg'
-      - run-tests:
-          redmine_version: '4.0.9'
-          ruby_version: '2.6'
-          database: 'mysql'
-      - run-tests:
-          redmine_version: '4.0.9'
-          ruby_version: '2.6'
-          database: 'mariadb'
-      - run-tests:
-          redmine_version: '4.0.9'
-          ruby_version: '2.6'
-          database: 'sqlite3'
 
-      # Older versions of Redmine only test PostgreSQL.(This is to shorten the execution time.)
-      - run-old-redmine-tests:
-          redmine_version: '3.4.13'
-          ruby_version: '2.4'
-          database: 'pg'
-      - run-old-redmine-tests:
-          redmine_version: '3.3.10'
-          ruby_version: '2.3'
-          database: 'pg'