Remove ignition

[nkoenig]

🎉 New feature

Removes ignition

Checklist

• Signed all commits for DCO
• Added tests
• Added example and/or tutorial
• 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 #364 (76a02d5) into gz-fuel-tools9 (8cf06e1) will decrease coverage by 0.12%.
The diff coverage is 100.00%.

❗ Current head 76a02d5 differs from pull request most recent head c72939f. Consider uploading reports for the commit c72939f to get more accurate results

@@                Coverage Diff                 @@
##           gz-fuel-tools9     #364      +/-   ##
==================================================
- Coverage           75.32%   75.20%   -0.12%     
==================================================
  Files                  20       20              
  Lines                2910     2892      -18     
==================================================
- Hits                 2192     2175      -17     
+ Misses                718      717       -1     

Files Changed	Coverage Δ
src/FuelClient.cc	68.51% <ø> (-0.36%)	⬇️
src/ClientConfig.cc	81.70% <100.00%> (-0.39%)	⬇️

[nkoenig]

@osrf-jenkins run tests.