Remove codecov as not really used (we verify for appropriate tests during PR review), but causing build issues unrelated to code chages.

.github/workflows/maven.yml

@@ -28,6 +28,3 @@ jobs:
           cache: 'maven'
       - name: Build with Maven
         run: ./mvnw clean install -B -U -P sonar
-      - uses: codecov/codecov-action@v3
-        with:
-          fail_ci_if_error: true

README.adoc

@@ -7,8 +7,6 @@ Edit the files in the src/main/asciidoc/ directory instead.
 
 image::https://github.com/spring-cloud/spring-cloud-openfeign/workflows/Build/badge.svg?branch=main&style=svg["Build",link="https://github.com/spring-cloud/spring-cloud-openfeign/actions"]
 
-image:https://codecov.io/gh/spring-cloud/spring-cloud-openfeign/branch/main/graph/badge.svg["Codecov", link="https://app.codecov.io/gh/spring-cloud/spring-cloud-openfeign/tree/main"]
-
 
 [[features]]
 == Features

docs/src/main/asciidoc/README.adoc

@@ -1,7 +1,5 @@
 image::https://github.com/spring-cloud/spring-cloud-openfeign/workflows/Build/badge.svg?branch=main&style=svg["Build",link="https://github.com/spring-cloud/spring-cloud-openfeign/actions"]
 
-image:https://codecov.io/gh/spring-cloud/spring-cloud-openfeign/branch/main/graph/badge.svg["Codecov", link="https://app.codecov.io/gh/spring-cloud/spring-cloud-openfeign/tree/main"]
-
 
 [[features]]
 == Features