This is Windows batch file that will clean up unimportant files in the Unity project's folder.

clean-full.bat

@echo off
echo Deleting all files in the 'Library' folder.
del /s /q /f "Library/"
rd /s /q "Library/"
echo Deleting all files in the 'Logs' folder.
del /s /q /f "Logs/"
rd /s /q "Logs/"
echo Deleting all files in the 'obj' folder.
del /s /q /f "obj/"
rd /s /q "obj/"
echo Deleting all C# Projects.
del *.csproj
echo Deleting all Visual Studio Solutions.
del *.sln
echo Deleting all junk files.
del /s /q /f .DS_STORE
echo Done.
pause

clean.bat

@echo off
echo Deleting all C# Projects.
del *.csproj
echo Deleting all Visual Studio Solutions.
del *.sln
echo Deleting all junk files.
del /s /q /f .DS_STORE
echo Done.
pause