ci: remove IE 11 tests and bump chrome 43 to chrome 47

Author: hamudi-ahmed

.buildkite/basic/browser-pipeline.yml

@@ -82,7 +82,7 @@ steps:
           - "safari_10"
           - "ios_15"
           - "android_9"
-          - "chrome_43"
+          - "chrome_47"
           - "chrome_72"
           - "firefox_78"
         depends_on: "browser-maze-runner-bs"
@@ -142,30 +142,3 @@ steps:
         concurrency_group: "bitbar"
         concurrency_method: "eager"
 
-      - label: ":bitbar: ie_11 Browser tests (EU hub)"
-        depends_on: "browser-maze-runner-bb"
-        timeout_in_minutes: 30
-        plugins:
-          docker-compose#v4.12.0:
-            pull: "browser-maze-runner-bb"
-            run: "browser-maze-runner-bb"
-            service-ports: true
-            use-aliases: true
-            command:
-              - "--farm=bb"
-              - "--browser=ie_11"
-              - "--no-tunnel"
-              - "--aws-public-ip"
-          artifacts#v1.5.0:
-            upload:
-              - "./test/browser/maze_output/failed/**/*"
-          test-collector#v1.10.2:
-            files: "reports/TEST-*.xml"
-            format: "junit"
-            branch: "^main|next$$"
-            api-token-env-name: "BROWSER_BUILDKITE_ANALYTICS_TOKEN"
-        concurrency: 25
-        concurrency_group: "bitbar"
-        concurrency_method: "eager"
-        env:
-          HOST: "localhost" # IE11 needs the host set to localhost