Drop transaction-based profiler

[romtsn]

Description

We should drop transaction/trace-based profiler in v9, as afaik span-first does not support it.

[linear]

JAVA-302

[adinauer]

Just to clarify, are we talking about Androids older profiler?
I'd assume we'll be able to still make the continuous profilers TRACE mode work based on root spans.

[romtsn]

@cleptric actually said we cannot make it work with span-only, or did I get that wrong Michi?

[cleptric]

I'd assume we'll be able to still make the continuous profilers TRACE mode work based on root spans.

This is the new stuff.
We have two profiling formats, Sample Format V1 and Sample Format V2.

When an SDK ships Span First, we have to remove support for v1, as it indeed will no longer work.