Revert "[config{grpc,http}] Add warning when using unspecified address (#6267)"

[codeboten]

This reverts commit 396964d.

[codecov]

Codecov Report

Base: 91.40% // Head: 91.43% // Increases project coverage by +0.02% 🎉

Coverage data is based on head (f64d4ab) compared to base (71e6952).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6405      +/-   ##
==========================================
+ Coverage   91.40%   91.43%   +0.02%     
==========================================
  Files         236      235       -1     
  Lines       13478    13454      -24     
==========================================
- Hits        12319    12301      -18     
+ Misses        935      931       -4     
+ Partials      224      222       -2     

Impacted Files	Coverage Δ
config/configgrpc/configgrpc.go	87.98% <ø> (+1.06%)	⬆️
config/confighttp/confighttp.go	100.00% <ø> (+1.87%)	⬆️

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[codeboten]

Reverting this change as it causes a breaking change preventing users from entering :6060 as their endpoint configuration. See https://github.com/open-telemetry/opentelemetry-collector-contrib/actions/runs/3323429895/jobs/5493782699#step:8:921 for failure