Disable POTel autoinstrumentation

[sentrivana]

Problem Statement

We want to start off without taking in any OTel integrations. Right now, if any OTel instrumentation package is installed and otel_powered_performance is on, we will use the OTel instrumentation automatically. We want to disable this behavior so that we don't use any OTel instrumentation, even if installed.

Solution Brainstorm

Remove the OTel entry points based instrumentation enabling logic, but leave infra in place for allowing for manually turning on certain instrumentation, if something can be reused.