removed references to sonar (#205)

Author: rhr323

.buildkite/pipeline.yml

@@ -15,17 +15,6 @@ steps:
       cpu: "4"
       memory: "5G"
 
-  - label: ":sonarqube: Static Code Analysis"
-    env:
-      VAULT_SONAR_TOKEN_PATH: "kv/ci-shared/serverless/shared-analysis-token"
-    agents:
-      image: "docker.elastic.co/cloud-ci/sonarqube/buildkite-scanner:latest"
-    command:
-      - "buildkite-agent artifact download coverage.out ."
-      - "/scan-source-code.sh"
-    soft_fail: true
-    depends_on: "tests"
-
   - label: ":go: Build"
     command: "make all"
     agents:

catalog-info.yaml

@@ -10,7 +10,6 @@ metadata:
     backstage.io/source-location: "url:https://github.com/elastic/elasticsearch-k8s-metrics-adapter/"
     github.com/project-slug: elastic/elasticsearch-k8s-metrics-adapter
     buildkite.com/project-slug: elastic/elasticsearch-k8s-metrics-adapter
-    sonarqube.org/project-key: elasticsearch-k8s-metrics-adapter
     pagerduty.com/service-id: PA1IPRT
   tags:
     - serverless