chore: remove codecov (#223)

.github/workflows/ci.yaml

@@ -23,10 +23,6 @@ jobs:
       run: ./gradlew test
     - name: Gradle Build
       run: ./gradlew build install
-    - name: coverage
-      uses: codecov/codecov-action@v1
-      with:
-        name: actions ${{ matrix.java }}
   format:
     runs-on: ubuntu-latest
     steps:

.kokoro/build.sh

@@ -23,5 +23,3 @@ echo $JOB_TYPE
 
 ./gradlew assemble
 ./gradlew build install
-
-bash $KOKORO_GFILE_DIR/codecov.sh

.kokoro/presubmit/common.cfg

@@ -24,11 +24,3 @@ env_vars: {
   value: "test"
 }
 
-before_action {
-  fetch_keystore {
-    keystore_resource {
-      keystore_config_id: 73713
-      keyname: "dpebot_codecov_token"
-    }
-  }
-}

README.md

@@ -3,8 +3,6 @@ API Common for Java
 
 [![Build Status](https://travis-ci.org/googleapis/api-common-java.svg?branch=master)](https://travis-ci.org/googleapis/api-common-java)
 
-[![Code Coverage](https://img.shields.io/codecov/c/github/googleapis/api-common-java.svg)](https://codecov.io/github/googleapis/api-common-java)
-
 - [Documentation](https://googleapis.dev/java/api-common/latest/index.html)
 
 API Common for Java is a library for foundational types relating to Google