Remove executable mode from lib.rs

[pbzweihander]

Description

Remove x mode from lib.rs file

Motivation and Context

lib.rs was marked as executable file at this commit: 815c331#diff-b4aea3e418ccdb71239b96952d9cddb6

I think there is no particular reason to be executable. Maybe a mistake.

How Has This Been Tested?

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[jbr]

Thanks (and nice catch)!