Removing custom `BlockDiagLazyTensor` logic when using `Standardize` (Take 2)

[SebastianAment]

Summary: Due to this linear operator PR, we should now be able to remove the custom logic in Standardize without performance impact.

Differential Revision: D39746709

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D39746709

[codecov[bot]]

Codecov Report

Merging #1414 (d9fabef) into main (a6cc512) will not change coverage. The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main     #1414   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          134       134           
  Lines        12408     12403    -5     
=========================================
- Hits         12408     12403    -5     

Impacted Files	Coverage Δ
botorch/models/transforms/outcome.py	100.00% <100.00%> (ø)

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[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D39746709

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D39746709

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D39746709