Revert "Objectstore transfer"

[phil-davis]

Reverts #36326

This let's us back-up a step of code and try again at the initial problem of issue #36266

See PR #36462 for a possible thing to do next in working-around the test fail on multi-bucket object storage.

[phil-davis]

The problem with reverting this is that it fixed a different test fail.
https://drone.owncloud.com/owncloud/files_primary_s3/1296/3/7

There was 1 failure:

1) OCA\Files\Tests\Command\TransferOwnershipTest::testTransferAllFiles
Failed asserting that actual size 3 matches expected size 0.

/var/www/owncloud/server/apps/files/tests/Command/TransferOwnershipTest.php:180

So if we do this revert then we get back the original problem that was reported in #36266 (comment)

@micbar @jvillafanez @karakayasemi

[codecov]

Codecov Report

Merging #36460 into master will increase coverage by 0.01%.
The diff coverage is 90.9%.

@@             Coverage Diff              @@
##             master   #36460      +/-   ##
============================================
+ Coverage     65.16%   65.18%   +0.01%     
+ Complexity    19802    19792      -10     
============================================
  Files          1271     1271              
  Lines         74760    74729      -31     
  Branches       1309     1309              
============================================
- Hits          48719    48712       -7     
+ Misses        25655    25631      -24     
  Partials        386      386

Flag	Coverage Δ	Complexity Δ
#javascript	54% <ø> (ø)	0 <ø> (ø)	⬇️
#phpunit	66.41% <90.9%> (+0.02%)	19792 <0> (-10)	⬇️

Impacted Files	Coverage Δ	Complexity Δ
...b/private/Files/ObjectStore/ObjectStoreStorage.php	83.78% <90.9%> (+6.54%)	95 <0> (-10)	⬇️

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