#850 Scope don't need attributes

[thompson-tomo]

Closes #850

Scope's are no longer required to have attributes as per the specification

[jsuereth]

I still think, as scope is mostly unused in weaver / semconv so far, it'd be nice to understand the plans for defining scope here, as it relates to V2 syntax where we'll have scope more explicit.

In fact, I'd prefer if we just don't add dependencies on using Scope in weaver for now until we migrate to V2 schema so we can clean up the YAML more easily.

Is there a compelling reason we need to add scope support now? I realize it's a hole in semconv today, but it's been like that for quite some time, I think another few months isn't going to cause significant burdens to semconv.

[thompson-tomo]

Actually I am not adding support for scopes as that is pre-existing functionality. But just removing the requirement of scopes to have attributes to match the spec.