cleanup mergify and dependabot

.github/dependabot.yml

@@ -17,36 +17,6 @@ updates:
     open-pull-requests-limit: 10
     labels:
       - dependencies
-
-  - package-ecosystem: gomod
-    directory: "/"
-    schedule:
-      interval: daily
-    target-branch: "release/v2.0.x"
-    # Only allow automated security-related dependency updates on release branches.
-    open-pull-requests-limit: 0
-    labels:
-      - dependencies
-
-  - package-ecosystem: gomod
-    directory: "/"
-    schedule:
-      interval: daily
-    target-branch: "release/v2.4.x-lsm"
-    # Only allow automated security-related dependency updates on release branches.
-    open-pull-requests-limit: 0
-    labels:
-      - dependencies
-
-  - package-ecosystem: gomod
-    directory: "/"
-    schedule:
-      interval: daily
-    target-branch: "release/v3.1.x"
-    # Only allow automated security-related dependency updates on release branches.
-    open-pull-requests-limit: 0
-    labels:
-      - dependencies
 
   - package-ecosystem: gomod
     directory: "/"

.mergify.yml

@@ -10,30 +10,6 @@ queue_rules:
       - "#approved-reviews-by>1"
 
 pull_request_rules:
-  - name: Backport patches to the release/v2.0.x branch
-    conditions:
-      - base=main
-      - label=A:backport/v2.0.x
-    actions:
-      backport:
-        branches:
-          - release/v2.0.x
-  - name: Backport patches to the release/v2.4.x-lsm branch
-    conditions:
-      - base=main
-      - label=A:backport/v2.4.x-lsm
-    actions:
-      backport:
-        branches:
-          - release/v2.4.x-lsm
-  - name: Backport patches to the release/v3.1.x branch
-    conditions:
-      - base=main
-      - label=A:backport/v3.1.x
-    actions:
-      backport:
-        branches:
-          - release/v3.1.x
   - name: Backport patches to the release/v3.2.x branch
     conditions:
       - base=main