[CM] Remove deprecation warning

[christophfroehlich]

This got deprecated in December, I think it's time to remove the noisy deprecation warning.

[bmagyar]

Could remove it from the msg too but for that I think we need to branch for iron...

We are beginnign to have a pile of stuff now that'd justify branching

[codecov-commenter]

Codecov Report

Merging #1101 (3a9eb52) into master (925f5f3) will decrease coverage by 2.78%.
Report is 510 commits behind head on master.
The diff coverage is 31.53%.

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@@            Coverage Diff             @@
##           master    #1101      +/-   ##
==========================================
- Coverage   34.61%   31.84%   -2.78%     
==========================================
  Files          52       94      +42     
  Lines        2981    10473    +7492     
  Branches     1855     7128    +5273     
==========================================
+ Hits         1032     3335    +2303     
- Misses        310      801     +491     
- Partials     1639     6337    +4698     

Flag	Coverage Δ
unittests	31.84% <31.53%> (-2.78%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
controller_manager/src/controller_manager.cpp	38.62% <ø> (-1.09%)	⬇️
controller_manager/src/ros2_control_node.cpp	0.00% <0.00%> (ø)
..._interface/include/hardware_interface/actuator.hpp	100.00% <ø> (ø)
...ce/include/hardware_interface/async_components.hpp	0.00% <0.00%> (ø)
...re_interface/include/hardware_interface/sensor.hpp	100.00% <ø> (ø)
...re_interface/include/hardware_interface/system.hpp	100.00% <ø> (ø)
...erface/src/mock_components/fake_generic_system.cpp	100.00% <ø> (ø)
...e_interface/src/mock_components/generic_system.cpp	52.29% <ø> (ø)
hardware_interface/src/resource_manager.cpp	46.76% <ø> (-6.87%)	⬇️
hardware_interface/src/sensor.cpp	50.52% <ø> (ø)
... and 69 more

... and 21 files with indirect coverage changes