fix: Remove duplicate check if debug logging is enabled

[JakubOnderka]

This check is not necessary, because logger.debug method is defined as:

    def debug(self, msg, *args, **kwargs):
        """
        Log 'msg % args' with severity 'DEBUG'.

        To pass exception information, use the keyword argument exc_info with
        a true value, e.g.

        logger.debug("Houston, we have a %s", "thorny problem", exc_info=1)
        """
        if self.isEnabledFor(DEBUG):
            self._log(DEBUG, msg, args, **kwargs)

[coveralls]

Coverage remained the same at 36.948% when pulling 6050ff1 on JakubOnderka:remove-duplicate-debug-check into 942f6e9 on MISP:main.

[coveralls]

Coverage remained the same at 36.948% when pulling 6050ff1 on JakubOnderka:remove-duplicate-debug-check into 942f6e9 on MISP:main.

[codecov]

Codecov Report

Merging #643 into main will decrease coverage by 0.87%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main     #643      +/-   ##
==========================================
- Coverage   37.86%   36.98%   -0.88%     
==========================================
  Files          38       39       +1     
  Lines        7488     7750     +262     
==========================================
+ Hits         2835     2866      +31     
- Misses       4653     4884     +231     

Impacted Files	Coverage Δ
pymisp/api.py	12.42% <0.00%> (-0.14%)	⬇️
pymisp/tools/emailobject.py	20.77% <0.00%> (-3.82%)	⬇️
pymisp/tools/peobject.py	22.52% <0.00%> (-1.07%)	⬇️
pymisp/mispevent.py	69.49% <0.00%> (-0.74%)	⬇️
pymisp/abstract.py	76.97% <0.00%> (-0.48%)	⬇️
tests/test_fileobject.py	100.00% <0.00%> (ø)
pymisp/tools/elfobject.py	27.02% <0.00%> (ø)
pymisp/tools/machoobject.py	28.16% <0.00%> (ø)
tests/testlive_comprehensive.py	0.00% <0.00%> (ø)
... and 3 more

---

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[Rafiot]

Looks good, thank you!