Checks: flake8 F841 (local variable assigned to but never used) fixes in the temporal directory

[mshukuno]

Description

Flake8 F841 (local variable assigned to but never used) fixes in the temporal directory. Two declarations of unused functions were deleted.

Motivation and context

Changes require resolving a part of Flake8 warnings that are currently ignored. The issue title and number as follows.

• [Bug] Fix currently ignored Flake8 warnings #1522

How has this been tested?

I've tested them with the gunittest tool in the tool folder.

Types of changes

Two declarations of unused functions were deleted.

• 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 not work as before)

Checklist

I was initially instructed to use 'Checks' for the PR title, however, if any cases need to be changed, please let me know since it isn't listed in release.yml.

• PR title provides summary of the changes and starts with one of the
  pre-defined prefixes
• My code follows the code style
  of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.