chengshiwen opened a new pull request #4769:
URL: https://github.com/apache/incubator-dolphinscheduler/pull/4769
## What is the purpose of the pull request
**Remove unused table: t_ds_master_server and t_ds_worker_server**
## Brief change log
- *Remove unused sql and table:
`sql/create/release-1.0.0_schema/mysql/dolphinscheduler_ddl.sql`*
- *Remove unused sql and table:
`sql/create/release-1.2.0_schema/postgresql/dolphinscheduler_ddl.sql`*
- *Remove unused sql and table: `sql/dolphinscheduler-postgre.sql`*
- *Remove unused sql and table:
`sql/upgrade/1.2.0_schema/mysql/dolphinscheduler_ddl.sql`*
## Verify this pull request
This pull request is already covered by existing tests, such as *(please
describe tests)*.
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