Revert "Update code quality documentation"

This reverts commit 45efd441.

doc/ci/examples/code_quality.md

 # Analyze your project's Code Quality
 
 CAUTION: **Caution:**
-The job definition shown below is supported on GitLab 11.4 and later versions.
+The job definition shown below is supported on GitLab 10.4 and later versions.
 For earlier versions, use the [old job definition](#old-job-definition).
 
 CAUTION: **Caution:**
@@ -16,7 +16,7 @@ and Docker.
 
 First, you need GitLab Runner with [docker-in-docker executor][dind].
 
-Once you set up the Runner, add a new job to `.gitlab-ci.yml`.
+Once you set up the Runner, add a new job to `.gitlab-ci.yml`, called `code_quality`.
 
 ```yaml
 code_quality:
@@ -34,50 +34,22 @@ code_quality:
         --volume /var/run/docker.sock:/var/run/docker.sock
         "registry.gitlab.com/gitlab-org/security-products/codequality:$SP_VERSION" /code
   artifacts:
-    reports:
-      codequality: [gl-code-quality-report.json]
+    paths: [gl-code-quality-report.json]
 ```
 
 The above example will create a `code_quality` job in your CI/CD pipeline which
 will scan your source code for code quality issues. The report will be saved
 as an artifact that you can later download and analyze.
 
-TIP: **Tip:**
-Starting with [GitLab Starter][ee] 11.4, this information will be automatically
-extracted and shown right in the merge request widget. To do so, the CI/CD job
-must have a codequality report artifact. Due to implementation limitations we
-always take the latest codequality artifact available.
-[Learn more on Code Quality in merge requests](https://docs.gitlab.com/ee/user/project/merge_requests/code_quality.html).
-
 TIP: **Tip:**
 Starting with [GitLab Starter][ee] 9.3, this information will
 be automatically extracted and shown right in the merge request widget. To do
 so, the CI/CD job must be named `code_quality` and the artifact path must be
 `gl-code-quality-report.json`.
+[Learn more on Code Quality in merge requests](https://docs.gitlab.com/ee/user/project/merge_requests/code_quality.html).
 
 ## Old job definition
 
-For GitLab 11.3 and earlier, the job should look like:
-
-```yaml
-code_quality:
-  image: docker:stable
-  variables:
-    DOCKER_DRIVER: overlay2
-  allow_failure: true
-  services:
-    - docker:stable-dind
-  script:
-    - export SP_VERSION=$(echo "$CI_SERVER_VERSION" | sed 's/^\([0-9]*\)\.\([0-9]*\).*/\1-\2-stable/')
-    - docker run
-        --env SOURCE_CODE="$PWD"
-        --volume "$PWD":/code
-        --volume /var/run/docker.sock:/var/run/docker.sock
-        "registry.gitlab.com/gitlab-org/security-products/codequality:$SP_VERSION" /code
-  artifacts:
-      paths: [gl-code-quality-report.json]
-```
-
 For GitLab 10.3 and earlier, the job should look like:
 
 ```yaml

doc/user/project/merge_requests/code_quality.md

@@ -27,19 +27,19 @@ For instance, consider the following workflow:
 
 ## How it works
 
-In order for the report to show in the merge request, you need to specify a job
-that will analyze the code and upload the resulting output JSON as a codequality
-report artifact. GitLab will then check this file and show the information
-inside the merge request.
+In order for the report to show in the merge request, you need to specify a
+`code_quality` job (exact name) that will analyze the code and upload the resulting
+`gl-code-quality-report.json` as an artifact. GitLab will then check this file and show
+the information inside the merge request.
 
 >**Note:**
 If the Code Climate report doesn't have anything to compare to, no information
 will be displayed in the merge request area. That is the case when you add the
-code quality job in your `.gitlab-ci.yml` for the very first time.
+`code_quality` job in your `.gitlab-ci.yml` for the very first time.
 Consecutive merge requests will have something to compare to and the code quality
 report will be shown properly.
 
-For more information on how the code quality job should look like, check the
+For more information on how the `code_quality` job should look like, check the
 example on [analyzing a project's code quality with Code Climate CLI][cc-docs].
 
 CAUTION: **Caution:**