Deprecate OT Trace propagator (#4851)

Fixes #4811

## Changes

Deprecate OT Trace propagator
The reasons behind this is in #4811 

For non-trivial changes, follow the [change proposal
process](https://github.com/open-telemetry/opentelemetry-specification/blob/main/CONTRIBUTING.md#proposing-a-change).

* [x] Related issues #4811
* ~~[ ] Related [OTEP(s)](https://github.com/open-telemetry/oteps) #~~
* ~~[ ] Links to the prototypes (when adding or changing features)~~
* [x]
[`CHANGELOG.md`](https://github.com/open-telemetry/opentelemetry-specification/blob/main/CHANGELOG.md)
file updated for non-trivial changes
* For trivial changes, include `[chore]` in the PR title to skip the
changelog check
* [x] [Spec compliance
matrix](https://github.com/open-telemetry/opentelemetry-specification/blob/main/spec-compliance-matrix/template.yaml)
updated if necessary

---------

Co-authored-by: Reiley Yang <[email protected]>

Author: Kielek

CHANGELOG.md

@@ -11,6 +11,8 @@ release.
 
 - Deprecate Jaeger propagator and make propagator implementation optional.
   ([#4827](https://github.com/open-telemetry/opentelemetry-specification/pull/4827))
+- Deprecate OT Trace propagator and make propagator implementation optional.
+  ([#4851](https://github.com/open-telemetry/opentelemetry-specification/pull/4851))
 
 ### Traces
 

spec-compliance-matrix.md

@@ -241,7 +241,7 @@ Disclaimer: this list of features is still a work in progress, please refer to t
 | TraceContext Propagator |  | + | + | + | + | + | + | + | + | + | + | + |
 | B3 Propagator |  | + | + | + | + | + | + | + | + | + | + | + |
 | Jaeger Propagator | X | + | + | + | + | + | + | + | + | + | - | + |
-| OT Propagator |  | + | + | + | + |  |  |  |  |  |  |  |
+| OT Propagator | X | + | + | + | + |  |  |  |  |  | - |  |
 | OpenCensus Binary Propagator |  | + |  |  |  |  |  |  |  |  |  |  |
 | [TextMapPropagator](specification/context/api-propagators.md#textmap-propagator) |  | + | + |  | + | + |  | + |  | + |  |  |
 | Fields |  | + | + | + | + | + | + | + | + | + | + | + |

spec-compliance-matrix/dotnet.yaml

@@ -426,7 +426,7 @@ sections:
       - name: Jaeger Propagator
         status: '-'
       - name: OT Propagator
-        status: '?'
+        status: '-'
       - name: OpenCensus Binary Propagator
         status: '?'
       - name: '[TextMapPropagator](specification/context/api-propagators.md#textmap-propagator)'

spec-compliance-matrix/template.yaml

@@ -277,6 +277,7 @@ sections:
       - name: Jaeger Propagator
         optional: true
       - name: OT Propagator
+        optional: true
       - name: OpenCensus Binary Propagator
       - name: '[TextMapPropagator](specification/context/api-propagators.md#textmap-propagator)'
       - name: Fields

specification/configuration/sdk-environment-variables.md

@@ -127,7 +127,7 @@ Known values for `OTEL_PROPAGATORS` are:
 - `"b3multi"`: [B3 Multi](../context/api-propagators.md#configuration)
 - `"jaeger"`: [Jaeger](https://www.jaegertracing.io/sdk-migration/#propagation-format) - **Status**: [Deprecated](../document-status.md)
 - `"xray"`: [AWS X-Ray](https://docs.aws.amazon.com/xray/latest/devguide/xray-concepts.html#xray-concepts-tracingheader) (_third party_)
-- `"ottrace"`: [OT Trace](https://github.com/opentracing?q=basic&type=&language=) (_third party_)
+- `"ottrace"`: [OT Trace](https://github.com/opentracing?q=basic&type=&language=) (_third party_) - **Status**: [Deprecated](../document-status.md)
 - `"none"`: No automatically configured propagator.
 
 Known values for `OTEL_TRACES_SAMPLER` are:

specification/context/api-propagators.md

@@ -367,6 +367,8 @@ as OpenTelemetry extension packages:
 * [OT Trace](https://github.com/opentracing?q=basic&type=&language=). Propagation format
   used by the OpenTracing Basic Tracers. It MUST NOT use `OpenTracing` in the resulting
   propagator name as it is not widely adopted format in the OpenTracing ecosystem.
+  **Status**: [Deprecated](../document-status.md), use the
+  [W3C TraceContext](https://www.w3.org/TR/trace-context/) instead.
 * [OpenCensus BinaryFormat](https://github.com/census-instrumentation/opencensus-specs/blob/master/encodings/BinaryEncoding.md#trace-context).
   Propagation format used by OpenCensus, which describes how to format the span context
   into the binary format, and does not prescribe a key. It is commonly used with