fix(DB Connections): removing paramProperties

[AAfghahi]

SUMMARY

We are refactoring portions of the Database Connection Form UI. We originally had a paramProperties field in state that would check for x-encrypted-true for database creation. However, we later replaced this with a parameters_schema calculated column. This PR is removing paramProperties.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

TESTING INSTRUCTIONS

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[hughhhh]

Don't we have to remove how it is being populated as well ?

[AAfghahi]

@hughhhh Good question. No because we use it for isDynamic as well:
https://github.com/apache/superset/blob/master/superset-frontend/src/views/CRUD/data/database/DatabaseModal/index.tsx#L645

[codecov]

Codecov Report

Merging #17024 (30446ef) into master (9ef2861) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #17024      +/-   ##
==========================================
- Coverage   76.93%   76.93%   -0.01%     
==========================================
  Files        1030     1030              
  Lines       55086    55085       -1     
  Branches     7478     7477       -1     
==========================================
- Hits        42381    42380       -1     
  Misses      12454    12454              
  Partials      251      251              

Flag	Coverage Δ
javascript	70.89% <ø> (-0.01%)	⬇️

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Impacted Files	Coverage Δ
...c/views/CRUD/data/database/DatabaseModal/index.tsx	43.79% <ø> (-0.15%)	⬇️

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