Delete dead code from ProtoReporter

[cocreature]

Description

Deletes a bunch of dead code.

Motivation

It’s not used anywhere.

[simuons]

@andrefmrocha you have added this code as part of #1068 but PR bazelbuild/bazel#11766 for which this code was added is stuck.
Do we still need to keep this code around? Are there any plans to progress with bazelbuild/bazel#11766?

[SocksDevil]

@andrefmrocha you have added this code as part of #1068 but PR bazelbuild/bazel#11766 for which this code was added is stuck.
Do we still need to keep this code around? Are there any plans to progress with bazelbuild/bazel#11766?

Unfortunately I've had very little feedback on bazelbuild/bazel#11766, even after various attempts to reach out. So I think it's okay to remove it.

[SocksDevil]

However, the ProtoReporter's output as a whole is already being used in bazel-bsp, so I hope we can maintain that

[cocreature]

However, the ProtoReporter's output as a whole is already being used in bazel-bsp, so I hope we can maintain that

absolutely, I’m not trying to get rid of the proto output. Just of code that isn’t contributing to producing the output.

[simuons]

Thanks @andrefmrocha, I just wanted to know there is nothing planned for this code in near future.

@cocreature thanks for PR. LGTM.