Remove `WithRecording` option from trace API

[iredelmeier]

This option needs to be removed before the GA release. The specification decision on how to resolve this issue has been postponed until after GA. To reduce the maintenance burden of this code after GA and to ensure we can support the future resolution of this issue at the specification level we need to remove this option.

Work needs to be done to explore how this option can be removed and still conform to the SDK specification sampling.

[danstephen88]

Say again

[paivagustavo]

When we tried to remove this (#223), we found out about the problem discussed in #224. Blocking this until open-telemetry/opentelemetry-specification#307 to be resolved.