chore(libdd-libunwind-sys): remove crate (#1887)

# What does this PR do?

A brief description of the change being made with this pull request.

# Motivation

What inspired you to submit this pull request?

# Additional Notes

Anything else we should know when reviewing?

# How to test the change?

Describe here in detail how the change can be validated.

Author: hoolioh

.github/CODEOWNERS

@@ -46,7 +46,6 @@ libdd-ddsketch*/                     @DataDog/libdatadog-apm @DataDog/apm-common
 libdd-dogstatsd-client               @DataDog/apm-common-components-core
 libdd-http-client                    @DataDog/apm-common-components-core
 libdd-library-config*/               @DataDog/apm-sdk-capabilities-rust
-libdd-libunwind*/                    @DataDog/libdatadog-profiling
 libdd-log*/                          @DataDog/apm-common-components-core
 libdd-otel-thread-ctx/               @DataDog/apm-common-components-core
 libdd-profiling*/                    @DataDog/libdatadog-profiling

.github/workflows/lint.yml

@@ -73,7 +73,7 @@ jobs:
         run: sudo apt-get install -y licensecheck
       - name: Check licenses
         # Exclude symbolizer-ffi from the checks (mostly imported code)
-        run: '! find . \( -name "*.rs" -o -name "*.c" -o -name "*.sh" \)  -not -path "./symbolizer-ffi/*" -not -path "./datadog-ipc/plugins/*" -not -path "./datadog-ipc/tarpc/*" -not -path "./libdd-libunwind-sys/libunwind/*" -print0 | xargs -0 licensecheck -c ".*" | grep -v "Apache License 2.0"'
+        run: '! find . \( -name "*.rs" -o -name "*.c" -o -name "*.sh" \)  -not -path "./symbolizer-ffi/*" -not -path "./datadog-ipc/plugins/*" -not -path "./datadog-ipc/tarpc/*" -print0 | xargs -0 licensecheck -c ".*" | grep -v "Apache License 2.0"'
 
   license-3rdparty:
     runs-on: ubuntu-latest

.github/workflows/release-proposal-dispatch.yml

@@ -17,7 +17,6 @@ on:
           - libdd-dogstatsd-client
           - libdd-http-client
           - libdd-library-config
-          - libdd-libunwind-sys
           - libdd-log
           - libdd-otel-thread-ctx
           - libdd-profiling