Remove 4.1.x support from dependabot

Signed-off-by: Ryan Baxter <[email protected]>

Author: ryanjbaxter

.github/dependabot.yml

@@ -42,17 +42,6 @@ updates:
         update-types:
           - version-update:semver-major
           - version-update:semver-minor
-  - package-ecosystem: maven
-    directory: /
-    schedule:
-      interval: daily
-    target-branch: 4.1.x
-    ignore:
-      # only upgrade by minor or patch
-      - dependency-name: "*"
-        update-types:
-          - version-update:semver-major
-          - version-update:semver-minor
   - package-ecosystem: npm
     target-branch: docs-build
     directory: /
@@ -73,8 +62,3 @@ updates:
     directory: /docs
     schedule:
       interval: weekly
-  - package-ecosystem: npm
-    target-branch: 4.1.x
-    directory: /docs
-    schedule:
-      interval: weekly