Remove un used imports and use enum

[mo7amed-3bdalla7]

What does this PR do?

Remove un used imports and use enum

Before submitting

• Was this discussed/agreed via a Github issue? (no need for typos and docs improvements)
• [*] Did you read the contributor guideline, Pull Request section?
• [*] Did you make sure to update the docs?
• [*] Did you write any new necessary tests?

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[codecov]

Codecov Report

Attention: Patch coverage is 86.36364% with 6 lines in your changes missing coverage. Please review.

Project coverage is 86%. Comparing base (fd19f49) to head (ecca9fa).

Additional details and impacted files

@@         Coverage Diff         @@
##           main   #493   +/-   ##
===================================
  Coverage    86%    86%           
===================================
  Files        37     37           
  Lines      2311   2306    -5     
===================================
- Hits       1996   1992    -4     
+ Misses      315    314    -1     

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