Cleaning combine-yamls output

[singhd789]

Describe your changes

• removing resetting the log level --> log level is already set with fre -v
• just some clean up for clearer output

Issue ticket number and link (if applicable)

n/a

Checklist before requesting a review

• I ran my code
• I tried to make my code readable
• I tried to comment my code
• I wrote a new test, if applicable
• I wrote new instructions/documentation, if applicable
• I ran pytest and inspected it's output
• I ran pylint and attempted to implement some of it's feedback
• No print statements; all user-facing info uses logging module

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.08%. Comparing base (ad432b1) to head (efc8d0e).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #748   +/-   ##
=======================================
  Coverage   84.08%   84.08%           
=======================================
  Files          70       70           
  Lines        4775     4757   -18     
=======================================
- Hits         4015     4000   -15     
+ Misses        760      757    -3     

Flag	Coverage Δ
unittests	84.08% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
fre/yamltools/combine_yamls_script.py	86.30% <100.00%> (ø)
fre/yamltools/info_parsers/analysis_info_parser.py	84.37% <100.00%> (-1.34%)	⬇️
fre/yamltools/info_parsers/cmor_info_parser.py	78.84% <ø> (+2.21%)	⬆️
fre/yamltools/info_parsers/compile_info_parser.py	92.95% <100.00%> (+0.31%)	⬆️
fre/yamltools/info_parsers/pp_info_parser.py	86.13% <100.00%> (-1.14%)	⬇️

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