Remove old jobs

.ci/jobs/elastic+elasticsearch-js+5.x.yml

@@ -1,15 +0,0 @@
----
-- job:
-    name: elastic+elasticsearch-js+5.x
-    display-name: 'elastic / elasticsearch-js # 5.x'
-    description: Testing the elasticsearch-js 5.x branch.
-    junit_results: "*-junit.xml"
-    parameters:
-    - string:
-        name: branch_specifier
-        default: refs/heads/5.x
-        description: the Git branch specifier to build (<branchName>, <tagName>,
-          <commitId>, etc.)
-    triggers:
-    - github
-    - timed: '@weekly'

.ci/jobs/elastic+elasticsearch-js+6.x.yml

@@ -1,15 +0,0 @@
----
-- job:
-    name: elastic+elasticsearch-js+6.x
-    display-name: 'elastic / elasticsearch-js # 6.x'
-    description: Testing the elasticsearch-js 6.x branch.
-    junit_results: "*-junit.xml"
-    parameters:
-    - string:
-        name: branch_specifier
-        default: refs/heads/6.x
-        description: the Git branch specifier to build (<branchName>, <tagName>,
-          <commitId>, etc.)
-    triggers:
-    - github
-    - timed: 'H */12 * * *'

.ci/jobs/elastic+elasticsearch-js+7.16.yml

@@ -1,15 +0,0 @@
----
-- job:
-    name: elastic+elasticsearch-js+7.16
-    display-name: 'elastic / elasticsearch-js # 7.16'
-    description: Testing the elasticsearch-js 7.16 branch.
-    junit_results: "*-junit.xml"
-    parameters:
-    - string:
-        name: branch_specifier
-        default: refs/heads/7.16
-        description: the Git branch specifier to build (<branchName>, <tagName>,
-          <commitId>, etc.)
-    triggers:
-    - github
-    - timed: 'H */12 * * *'