PackerMAT: adjust log messages

[thexai]

Description

PackerMAT: adjust log messages

Motivation and context

• Removed a log line that not provides much useful info (it was mostly for development).
• Adjusted others two lines using Log instead of LogF due different behavior in others platforms compared Windows: only in Windows shows class name.

How has this been tested?

Build Windows x64

What is the effect on users?

Consistent log messages in all platforms.

Types of change

• Bug fix (non-breaking change which fixes an issue)
• Clean up (non-breaking change which removes non-working, unmaintained functionality)
• Improvement (non-breaking change which improves existing functionality)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that will cause existing functionality to change)
• Cosmetic change (non-breaking change that doesn't touch code)
• Student submission (PR was done for educational purposes and will be treated as such)
• None of the above (please explain below)

Checklist:

• My code follows the Code Guidelines of this project
• My change requires a change to the documentation, either Doxygen or wiki
• I have updated the documentation accordingly
• I have read the Contributing document
• I have added tests to cover my change
• All new and existing tests passed