🔧 renovate: Remove docker_compose match

The role matched by this was removed, and is handled through
requirements.yml now.  That should already be covered by renovate
without additional configuration.

renovate.json

@@ -11,17 +11,6 @@
       "matchStrings": [
         "image: (?<depName>.*?):(?<currentValue>.*?)(@(?<currentDigest>sha256:.*?))?\\s"
       ]
-    },
-    {
-      "fileMatch": [
-        "^roles/docker_setup/defaults/main.yml$"
-      ],
-      "datasourceTemplate": "github-release",
-      "versioningTemplate": "semver",
-      "depNameTemplate": "docker-compose",
-      "matchStrings": [
-        "docker_compose_version: (?<currentValue>.*?)\\s"
-      ]
     }
   ],
   "packageRules": [
@@ -30,5 +19,4 @@
       "schedule": [ "on friday" ]
     }
   ]
-
-}
+}