[SPARK-26744][SQL][HOTFIX] Disable schema validation tests for FileDataSourceV2 (partially revert SPARK-26744) #23828
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What changes were proposed in this pull request?
This PR partially revert SPARK-26744.
60caa92 and 4dce45a were merged at similar time range independently. So the test failures were not caught.
60caa92 happened to add a schema reading logic in writing path for overwrite mode as well.
4dce45a added some tests with overwrite modes with migrated ORC v2.
And the tests looks starting to fail.
I guess the discussion won't be short (see #23606 (comment)) and this PR proposes to disable the tests added at 4dce45a to unblock other PRs for now.
How was this patch tested?
Existing tests.