[E2E] Remove smoketests (#23469)

.circleci/config.yml

@@ -1300,7 +1300,6 @@ workflows:
                   "admin",
                   "filters",
                   "onboarding",
-                  "smoketest",
                   "visualizations",
                 ]
           name: e2e-tests-<< matrix.folder >>-<< matrix.edition >>

frontend/test/metabase/scenarios/smoketest/README.md

-# Metabase Smoketests
-
-These files exist to ensure that we can always do the things we expect with Metabase. :)
-
-## Running
-
-From the root of the repository:
-
-- If you already have built Metabase with `./bin/build`, just run this to run all the tests.
-
-```shell
-yarn run test-cypress-run --folder smoketest
-```
-
-- Active development, add `--open`

frontend/test/metabase/scenarios/smoketest/hello.cy.spec.js

-describe("hello", () => {
-  it("says hi", () => {
-    cy.log("hi");
-  });
-});