This ticket should list all the unused code sections and address them.

• There are a few Evergreen functions that are not used:
  • tiered abort test
    • A task already exists, see "csuite-tiered-abort-test" but it has been decided to keep it for later use. 
  • timestamp abort test
    • The task already exists, see "csuite-timestamp-abort-test", code can be removed.

• This seems redundant:

      - command: shell.exec
        params:
          working_dir: "wiredtiger/build_posix"
          script: |
            set -o errexit
            set -o verbose            
            WT3363_CHECKPOINT_OP_RACES=1 test/csuite/./test_wt3363_checkpoint_op_races 2>&1 

It is in the long-test task and there is already csuite-wt3363-checkpoint-op-races-test that does the exact same thing. Furthermore, the option WT3363_CHECKPOINT_OP_RACES does no longer exists.

• In the ftruncate-test task, the random_abort is commented out. We could probably add it back. It will be done as part of WT-8519.
• A task named "linux-directio" is commented out. Investigate if we should keep it.
  • Another task linux-directio already exists just above. This other task uses the format test script function that lets us run test format in parallel. This change was introduced in WT-5458. The commented test uses the format test function which does not allow parallelization. As the two tests are the same, we can remove the commented one.