Revert "Weak-public but still some kind-of-public Browser API"

This reverts commit 4f6ea6d.

ruby_event_store-browser/spec/root_spec.rb

@@ -3,26 +3,22 @@
 module RubyEventStore
   RSpec.describe Browser do
     specify { expect(test_client.get("/")).to be_ok }
-
     specify { expect(test_client.post("/")).to be_not_found }
-
     specify { expect(test_client.get("/streams/all")).to be_ok }
-
     specify do
       event_store.append(DummyEvent.new(event_id: event_id))
       expect(test_client.get("/events/#{event_id}")).to be_ok
     end
-
     specify { expect(test_client.get("/").content_type).to eq("text/html;charset=utf-8") }
 
-    specify { expect(Browser::App.for(event_store_locator: -> { event_store })).to be_a(Browser::App) }
-
     let(:event_store) { RubyEventStore::Client.new(repository: RubyEventStore::InMemoryRepository.new) }
     let(:test_client) { TestClient.new(app_builder(event_store), "www.example.com") }
     let(:event_id) { SecureRandom.uuid }
 
     def app_builder(event_store)
-      Rack::Lint.new(RubyEventStore::Browser::App.for(event_store_locator: -> { event_store }))
+      Rack::Lint.new(
+        RubyEventStore::Browser::App.for(event_store_locator: -> { event_store })
+      )
     end
   end
 end