Remove deprecated connections

[Sovietaced]

Why are the changes needed?

Removes duplicated/deprecated DAG connections to reduce size of CRD.

What changes were proposed in this pull request?

Removes DeprecatedConnections

How was this patch tested?

Integration tests

Labels

Please add one or more of the following labels to categorize your PR:

• added: For new features.
• changed: For changes in existing functionality.
• deprecated: For soon-to-be-removed features.
• removed: For features being removed.
• fixed: For any bug fixed.
• security: In case of vulnerabilities

This is important to improve the readability of release notes.

Setup process

Screenshots

Check all the applicable boxes

• I updated the documentation accordingly.
• All new and existing tests passed.
• All commits are signed-off.

Related PRs

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 57.02%. Comparing base (7dc9b56) to head (e319f30).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #7538   +/-   ##
=======================================
  Coverage   57.01%   57.02%           
=======================================
  Files         931      931           
  Lines       58389    58359   -30     
=======================================
- Hits        33291    33278   -13     
+ Misses      22036    22021   -15     
+ Partials     3062     3060    -2     

Flag	Coverage Δ
unittests-datacatalog	53.51% <ø> (ø)
unittests-flyteadmin	53.15% <ø> (ø)
unittests-flytecopilot	43.06% <ø> (ø)
unittests-flytectl	64.09% <ø> (+0.19%)	⬆️
unittests-flyteidl	75.71% <ø> (ø)
unittests-flyteplugins	60.35% <ø> (ø)
unittests-flytepropeller	53.73% <ø> (-0.06%)	⬇️
unittests-flytestdlib	62.78% <ø> (ø)

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