handle_content_missing RUNTIME_ERROR redundant error log

[melbaa]

Hello,

I believe logging the error message at

aws-xray-sdk-python/aws_xray_sdk/core/context.py

Line 123 in 05f5e8f

log.error(MISSING_SEGMENT_MSG)

is redundant. The exception already carries the message.

My use case is to check if there's already a segment open via get_trace_entity(). I handle the exception and create a new segment if needed. I still end up with the error message from the SDK in my logs.

[melbaa]

The fix made it into the 2.9.0 release, thanks!