Remove unused time var in material scripts

[iche033]

Signed-off-by: Ian Chen [email protected]

🦟 Bug fix

Summary

The time param declared in the ogre2 material scripts are no longer used in the shaders.

Here are the corresponding shaders. You can see that there are no uniforms called time:

gpu_ray_1st_pass_fs.glsl - time removed in #388
depth_camera_fs.glsl - time was probably never used.

Checklist

• Signed all commits for DCO
• Added tests
• Updated documentation (as needed)
• Updated migration guide (as needed)
• 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

[codecov]

Codecov Report

Merging #485 (af174df) into ign-rendering4 (478e755) will not change coverage.
The diff coverage is n/a.

@@               Coverage Diff               @@
##           ign-rendering4     #485   +/-   ##
===============================================
  Coverage           55.95%   55.95%           
===============================================
  Files                 147      147           
  Lines               14119    14119           
===============================================
  Hits                 7900     7900           
  Misses               6219     6219           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 478e755...af174df. Read the comment docs.

[osrf-triage]

This pull request has been mentioned on Gazebo Community. There might be relevant details there:

https://community.gazebosim.org/t/new-ignition-releases-2022-01-10/1228/1