chore(ci): remove codecov

We use Datadog Code Coverage now.

Author: dmehala

.github/workflows/dev.yml

@@ -181,13 +181,6 @@ jobs:
           cd .coverage
           cp filtered.info lcov.info
           datadog-ci coverage upload lcov.info
-      - uses: codecov/codecov-action@671740ac38dd9b0130fbe1cec585b89eea48d3de # v5.5.2
-        with:
-          fail_ci_if_error: true
-          files: .coverage/filtered.info
-          disable_search: true
-          token: ${{ secrets.CODECOV_TOKEN }}
-          verbose: true
 
   build-system-tests-artifact:
     runs-on: ubuntu-22.04

README.md

@@ -1,6 +1,5 @@
 Datadog C++ Tracing Library
 ===========================
-[![codecov](https://codecov.io/gh/DataDog/dd-trace-cpp/graph/badge.svg?token=78VYILWPMC)](https://codecov.io/gh/DataDog/dd-trace-cpp)
 
 ```c++
 #include <datadog/span_config.h>

bin/test

@@ -60,7 +60,7 @@ if [ "$coverage_flags" != '' ]; then
     # Use the faster JSON Perl module, JSON:XS, to speed things up.
     lcov --quiet --capture --directory .build --output-file .coverage/raw.info --rc geninfo_json_module=JSON::XS
     # Filter out system headers and test drivers.
-    lcov --quiet --remove .coverage/raw.info -o .coverage/filtered.info '/usr/*' "$(pwd)/test/*" '*json.hpp'
+    lcov --quiet --remove .coverage/raw.info -o .coverage/filtered.info '/usr/*' "$(pwd)/test/*" '*json.hpp' '*/common/hash.*'
 
     echo 'Done.'
 fi