[PR] [Improvement](sort) remove radix sort [doris]

[via GitHub]

BiteTheDDDDt opened a new pull request, #41287:
URL: https://github.com/apache/doris/pull/41287

   ## Proposed changes
   remove radix sort
   
   ```sql
   radix sort
   mysql [test]>SELECT COUNT() FROM (   SELECT UserID   FROM hits_1m   ORDER BY 
FlashMajor   LIMIT 50000000 ) t;
   +----------+
   | count(*) |
   +----------+
   |  1000000 |
   +----------+
   1 row in set (0.30 sec)
   
   pdq sort
   mysql [test]>SELECT COUNT() FROM (   SELECT UserID   FROM hits_1m   ORDER BY 
FlashMajor   LIMIT 50000000 ) t;
   +----------+
   | count(*) |
   +----------+
   |  1000000 |
   +----------+
   1 row in set (0.24 sec)
   
   ```


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