Bug 2070978 - Remove newtab trainhop compatibility shim from browser_asrouter_newtab_messages. r=omc-reviewers,mimi

This shim is not required once Firefox 155 hits the release channel, which it has,
so we can remove it now.

Differential Revision: https://phabricator.services.mozilla.com/D325054

browser/components/asrouter/tests/browser/browser_asrouter_newtab_messages.js

@@ -41,103 +41,10 @@ add_setup(async function () {
   );
   Assert.ok(gTestNewTabMessage, "Found a test fxa_cta message to use.");
 
-  /**
-   * @backward-compat { version 155 }
-   *
-   * This test message was added to PanelTestProvider in version 155. This test,
-   * however, runs in the newtab train-hop CI jobs, which means that we have
-   * to shim the test message until the PanelTestProvider change reaches 155.
-   */
-  if (Services.vc.compare(AppConstants.MOZ_APP_VERSION, "155.0a1") < 0) {
-    gTestPollingNewTabMessage = {
-      id: "TEST_ASROUTER_NEWTAB_MESSAGE_POLL_DEFAULT",
-      template: "newtab_message",
-      content: {
-        messageType: "ASRouterNewTabMessage",
-        imageSrc:
-          // eslint-disable-next-line mozilla/no-newtab-refs-outside-newtab
-          "chrome://newtab/content/data/content/assets/kit-in-circle.svg",
-        heading: "Make Firefox your own",
-        body: "Set Firefox as your default browser and pin it so it's always a click away.",
-        hideDismissButton: false,
-        // Declarative variants: each entry's `targeting` is re-evaluated against
-        // the live ASRouter environment (the "uncached" attributes read live
-        // shell state), and the first match's content overlays the base content.
-        // A `final` entry stops the re-evaluation poll once reached. Here, each
-        // state drops whichever step is already satisfied, so only the still-
-        // relevant button(s) show: both when neither is done (base content), only
-        // "Pin to taskbar" once we're the default, only "Set as default" once
-        // we're pinned, and the completed state once both are true.
-        states: [
-          {
-            // Already the default but not pinned: drop the "Set as default" step
-            // and only ask to pin.
-            targeting: "isDefaultBrowserUncached && doesAppNeedPinUncached",
-            content: {
-              primaryButton: null,
-            },
-          },
-          {
-            // Already pinned but not the default: drop the "Pin to taskbar" step
-            // and only ask to set as default.
-            targeting: "!isDefaultBrowserUncached && !doesAppNeedPinUncached",
-            content: {
-              secondaryButton: null,
-            },
-          },
-          {
-            // Default and pinned: everything's done. Show the completed state
-            // and stop polling.
-            targeting: "isDefaultBrowserUncached && !doesAppNeedPinUncached",
-            final: true,
-            content: {
-              heading: "You're all set",
-              body: "Firefox is now your default browser and pinned. Thanks!",
-              // No `type`, so this renders in the primary style.
-              primaryButton: {
-                label: "Go to settings to try it out!",
-                action: {
-                  type: "OPEN_ABOUT_PAGE",
-                  data: { args: "settings#browserIcon", where: "tab" },
-                },
-              },
-              secondaryButton: null,
-            },
-          },
-        ],
-        // The base content (neither step done) shows both steps, rendered non-
-        // primary (`type: "default"`) since neither is the single call-to-action.
-        // The states above swap in narrower content as each step is satisfied.
-        primaryButton: {
-          label: "Set as default",
-          type: "default",
-          action: {
-            type: "SET_DEFAULT_BROWSER",
-          },
-        },
-        secondaryButton: {
-          label: "Pin to taskbar",
-          type: "default",
-          action: {
-            type: "PIN_FIREFOX_TO_TASKBAR",
-          },
-        },
-        position: "ABOVE_TOPSITES",
-      },
-      frequency: {
-        lifetime: 3,
-      },
-      trigger: {
-        id: "newtabMessageCheck",
-      },
-      targeting: "true",
-      groups: ["cfr"],
-    };
-  } else {
-    gTestPollingNewTabMessage = await PanelTestProvider.getMessages().then(
-      msgs => msgs.find(msg => msg.id === TEST_POLLING_MESSAGE_ID)
-    );
-  }
+  gTestPollingNewTabMessage = await PanelTestProvider.getMessages().then(msgs =>
+    msgs.find(msg => msg.id === TEST_POLLING_MESSAGE_ID)
+  );
+
   Assert.ok(
     gTestPollingNewTabMessage,
     "Found a test polling newtab message to use."