Remove GetExporters from component.Host

[TylerHelmuth]

Description:
Remove the deprecated GetExporters function from component.Host

Link to tracking Issue:

Related to #7370

[TylerHelmuth]

Depends on open-telemetry/opentelemetry-collector-contrib#32498

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.67%. Comparing base (4f26784) to head (6eecd0c).
Report is 7 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9987      +/-   ##
==========================================
- Coverage   91.78%   91.67%   -0.12%     
==========================================
  Files         359      360       +1     
  Lines       16631    16641      +10     
==========================================
- Hits        15265    15255      -10     
- Misses       1040     1053      +13     
- Partials      326      333       +7     

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[mx-psi]

I think we should

1. Assert somewhere that the service implementation of component.Host still has this method.
2. File an issue on the service 1.0 milestone tracker to remove this from the service implementation

[TylerHelmuth]

File an issue on the service 1.0 milestone tracker to remove this from the service implementation

@mx-psi to avoid losing any context, I was planning to move #7370 from the component milestone to the service milestone once this is merged. I will add a not in that issue for what extra stuff needs done for service as part of delaying the work until then. Is that sufficient?

[mx-psi]

Using the same issue works for me :)