Remove calls to TensorFlow related cellfinder functions

[IgorTatarnikov]

Before submitting a pull request (PR), please read the contributing guide.

Please fill out as much of this template as you can, but if you have any problems or questions, just leave a comment and we will help out :)

Description

What is this PR

• Bug fix
• Addition of a new feature
• Other

Why is this PR needed?
Cellfinder is now using PyTorch so functions related to suppressing TensorFlow error messages no longer exist.

What does this PR do?
Removes any comments and function calls relating to suppressing TensorFlow error messages.

References

Waiting on brainglobe/cellfinder#418 to be merged

Is this a breaking change?

No

Does this PR require an update to the documentation?

No

Checklist:

• The code has been tested locally
• The code has been formatted with pre-commit

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.64%. Comparing base (3cedfbc) to head (b4b7146).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #112      +/-   ##
==========================================
- Coverage   85.68%   85.64%   -0.04%     
==========================================
  Files          16       16              
  Lines         838      836       -2     
==========================================
- Hits          718      716       -2     
  Misses        120      120              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.