[chore][exporter/skywalking] remove codeowner (open-telemetry#30294)

**Description:**
Move @liqiangz  to emeritus codeowner.

**Link to tracking Issue:**
Fixes open-telemetry#23397

NOTE: This removes the last active codeowner of the skywalking exporter.
If this is merged, a follow up PR will be filed to move this component
to `unmaintained` stage, and eventually deprecation and removal.

.github/CODEOWNERS

@@ -74,7 +74,7 @@ exporter/pulsarexporter/                                 @open-telemetry/collect
 exporter/sapmexporter/                                   @open-telemetry/collector-contrib-approvers @dmitryax @atoulme
 exporter/sentryexporter/                                 @open-telemetry/collector-contrib-approvers @AbhiPrasad
 exporter/signalfxexporter/                               @open-telemetry/collector-contrib-approvers @dmitryax @crobert-1
-exporter/skywalkingexporter/                             @open-telemetry/collector-contrib-approvers @liqiangz
+exporter/skywalkingexporter/                             @open-telemetry/collector-contrib-approvers
 exporter/splunkhecexporter/                              @open-telemetry/collector-contrib-approvers @atoulme @dmitryax
 exporter/sumologicexporter/                              @open-telemetry/collector-contrib-approvers @sumo-drosiek
 exporter/syslogexporter/                                 @open-telemetry/collector-contrib-approvers @kkujawa-sumo @rnishtala-sumo @astencel-sumo

cmd/githubgen/allowlist.txt

@@ -7,7 +7,6 @@ asaharn
 billmeyer
 emreyalvac
 kiranmayib
-liqiangz
 shaochengwang
 svrakitin
 yiyang5055

exporter/skywalkingexporter/README.md

@@ -6,7 +6,8 @@
 | Stability     | [beta]: metrics, logs   |
 | Distributions | [contrib] |
 | Issues        | [![Open issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aopen%20label%3Aexporter%2Fskywalking%20&label=open&color=orange&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aopen+is%3Aissue+label%3Aexporter%2Fskywalking) [![Closed issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aclosed%20label%3Aexporter%2Fskywalking%20&label=closed&color=blue&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aclosed+is%3Aissue+label%3Aexporter%2Fskywalking) |
-| [Code Owners](https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/CONTRIBUTING.md#becoming-a-code-owner)    | [@liqiangz](https://www.github.com/liqiangz) |
+| [Code Owners](https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/CONTRIBUTING.md#becoming-a-code-owner)    |  |
+| Emeritus      | [@liqiangz](https://www.github.com/liqiangz) |
 
 [beta]: https://github.com/open-telemetry/opentelemetry-collector#beta
 [contrib]: https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-contrib

exporter/skywalkingexporter/metadata.yaml

@@ -6,4 +6,5 @@ status:
     beta: [metrics, logs]
   distributions: [contrib]
   codeowners:
-    active: [liqiangz]
+    active: []
+    emeritus: [liqiangz]