Improve cleaning issued tokens of an organization user when user is deleting

[ShanChathusanda93]

Proposed changes in this pull request

• $subject

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 87 lines in your changes missing coverage. Please review.

Project coverage is 55.72%. Comparing base (32cb723) to head (b1f37cb).
Report is 6 commits behind head on master.

Files with missing lines	Patch %	Lines
...on/identity/oauth2/dao/TokenManagementDAOImpl.java	0.00%	76 Missing ⚠️
...java/org/wso2/carbon/identity/oauth/OAuthUtil.java	0.00%	10 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #2680      +/-   ##
============================================
- Coverage     55.79%   55.72%   -0.07%     
+ Complexity     8446     8325     -121     
============================================
  Files           632      632              
  Lines         48587    48669      +82     
  Branches       9300     9311      +11     
============================================
+ Hits          27109    27122      +13     
- Misses        17601    17666      +65     
- Partials       3877     3881       +4     

Flag	Coverage Δ
unit	39.01% <0.00%> (+0.03%)	⬆️

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