Fix the out parameter test failuer in Postgres DB

[daneshk]

Purpose

Fixes: ballerina-platform/ballerina-library#7445
Fixes: ballerina-platform/ballerina-library#7380

The fix introduced for the issue ballerina-platform/ballerina-library#7255 only addresses default result processors. When there is a custom processor, it still fails. This PR is to fix it.

With the fix, unit tests written in OutParameterProcessorTest.java is not valid, Hence removing them.

Examples

Checklist

• Linked to an issue
• Updated the specification
• Updated the changelog
• Added tests
• Checked native-image compatibility

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 5 lines in your changes missing coverage. Please review.

Project coverage is 79.82%. Comparing base (c57df5b) to head (44f2240).
Report is 10 commits behind head on master.

Files with missing lines	Patch %	Lines
...a/stdlib/sql/nativeimpl/OutParameterProcessor.java	50.00%	5 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #760      +/-   ##
============================================
- Coverage     80.11%   79.82%   -0.30%     
  Complexity      109      109              
============================================
  Files            41       41              
  Lines          3933     3926       -7     
  Branches        666      666              
============================================
- Hits           3151     3134      -17     
- Misses          526      537      +11     
+ Partials        256      255       -1     

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[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[RDPerera]

LGTM