Removed warning

[ahcorde]

🦟 Bug fix

Summary

Removed warning: unused parameter

Checklist

• Signed all commits for DCO
• Added tests
• Updated documentation (as needed)
• Updated migration guide (as needed)
• Consider updating Python bindings (if the library has them)
• codecheck passed (See contributing)
• All tests passed (See test coverage)
• While waiting for a review on your PR, please help review another open pull request to support the maintainers

Note to maintainers: Remember to use Squash-Merge and edit the commit message to match the pull request summary while retaining Signed-off-by messages.

[codecov]

Codecov Report

Merging #861 (d789427) into gz-rendering7 (b32cbd3) will not change coverage.
The diff coverage is n/a.

❗ Current head d789427 differs from pull request most recent head 3826e05. Consider uploading reports for the commit 3826e05 to get more accurate results

@@              Coverage Diff               @@
##           gz-rendering7     #861   +/-   ##
==============================================
  Coverage          77.14%   77.14%           
==============================================
  Files                170      170           
  Lines              14715    14715           
==============================================
  Hits               11352    11352           
  Misses              3363     3363           

Impacted Files	Coverage Δ
ogre2/src/Ogre2GzHlmsSharedPrivate.cc	100.00% <ø> (ø)

[ahcorde]

@osrf-jenkins run tests please!