Fix warnings set but not used [-Wunused-but-set-variable] in remote_debug.h

[chris-eibl]

Since #134682 these warnings

Python/remote_debug.h:677:9: warning: variable 'lines_processed' set but not used [-Wunused-but-set-variable] Python/remote_debug.h:678:9: warning: variable 'matches_found' set but not used [-Wunused-but-set-variable] 

show up on build bots, e.g. https://buildbot.python.org/#/builders/441/builds/8081.

Likewise, I see similar warnings in clang-cl based builds on Windows (#131296):

..\Python\remote_debug.h(843,9): warning : variable 'modules_examined' set but not used [-Wunused-but-set-variable] [e:\cpython_clang\PCbuild\pythoncore.vcxproj] ..\Python\remote_debug.h(844,9): warning : variable 'matches_found' set but not used [-Wunused-but-set-variable] [e:\cpython_clang\PCbuild\pythoncore.vcxproj] 

@pablogsal I think this is a skip news and a skip issue (even though it should be backported to 3.14)?
Or shall/can I link it to #91048?

[pablogsal]

@pablogsal I think this is a skip news and a skip issue (even though it should be backported to 3.14)?

Correct!

[miss-islington-app]

Thanks @chris-eibl for the PR, and @pablogsal for merging it 🌮🎉.. I'm working now to backport this PR to: 3.14.
🐍🍒⛏🤖 I'm not a witch! I'm not a witch!

[bedevere-app]

GH-135319 is a backport of this pull request to the 3.14 branch.

[pablogsal]

Thanks a lot for the fix @chris-eibl 🚀