Remove Docker slave cleanup job

This job is not applicable in Open CI Arm infra which
uses auto scaling nodes in K8.

Change-Id: If9c3b566b6480f01080e5fad3a95006ab0c933e1
Signed-off-by: Saheer Babu <saheer.babu@arm.com>
diff --git a/ci-dockerslaves-cleanup.yaml b/ci-dockerslaves-cleanup.yaml
deleted file mode 100644
index d5d5881..0000000
--- a/ci-dockerslaves-cleanup.yaml
+++ /dev/null
@@ -1,60 +0,0 @@
-- job:
-    name: ci-dockerslaves-cleanup
-    project-type: matrix
-    defaults: global
-    properties:
-        - authorization:
-            anonymous:
-                - job-discover
-            authenticated:
-                - job-discover
-                - job-read
-                - job-extended-read
-        - build-discarder:
-            days-to-keep: 20
-            num-to-keep: 50
-        - build-blocker:
-            use-build-blocker: true
-            blocking-jobs:
-              - "ci-docker*"
-            block-level: 'NODE'
-            queue-scanning: 'ALL'
-    disabled: false
-    node: master
-    concurrent: false
-    display-name: 'CI docker cleanup and image update'
-    triggers:
-        - timed : 'H */2 * * *'
-    axes:
-        - axis:
-            type: slave
-            name: nodes
-            values:
-                - x86_64-TF-01
-                - x86_64-TF-02
-                - x86_64-TF-03
-                - x86_64-TF-04
-                - x86_64-TF-05
-    execution-strategy:
-        sequential: false
-    wrappers:
-        - timestamps
-        - credentials-binding:
-            - text:
-                credential-id: MISRA_AWS_ACCESS_KEY_ID
-                variable: AWS_ACCESS_KEY_ID
-        - credentials-binding:
-            - text:
-                credential-id: MISRA_AWS_SECRET_ACCESS_KEY
-                variable: AWS_SECRET_ACCESS_KEY
-    builders:
-        - shell:
-            !include-raw: ci-dockerfiles-deployment/cleanup-update.sh
-        - shell:
-            !include-raw: misra-docker-images/update.sh
-        - shell:
-            !include-raw: iar-docker-images/update.sh
-
-    publishers:
-        - email:
-            recipients: 'linaro-infrastructure-errors@lists.linaro.org paul.sokolovsky@linaro.org'