Revert "Merge pull request #34387 from yhirano55/rails_info_properties_json"

We had a discussion on the Core team and we don't want to expose this information
as a JSON endpoint and not by default.

It doesn't make sense to expose this JSON locally and this controller is only
accessible in dev, so the proposed access from a production app seems off.

This reverts commit 8eaffe7e89719ac62ff29c2e4208cfbeb1cd1c38, reversing
changes made to 133e0ba33db5887b047c9ac8233e5b414657bca5.

railties/CHANGELOG.md

@@ -71,12 +71,6 @@
 
     *Gannon McGibbon*
 
-*   Add JSON support to rails properties route (`/rails/info/properties`).
-
-    Now, `Rails::Info` properties may be accessed in JSON format at `/rails/info/properties.json`.
-
-    *Yoshiyuki Hirano*
-
 *   Use Ids instead of memory addresses when displaying references in scaffold views.
 
     Fixes #29200.

railties/lib/rails/info.rb

@@ -54,10 +54,6 @@ def to_html
           table << "</table>"
         end
       end
-
-      def to_json
-        Hash[properties].to_json
-      end
     end
 
     # The Rails version.

railties/lib/rails/info_controller.rb

@@ -14,16 +14,8 @@ def index
   end
 
   def properties
-    respond_to do |format|
-      format.html do
-        @info = Rails::Info.to_html
-        @page_title = "Properties"
-      end
-
-      format.json do
-        render json: Rails::Info.to_json
-      end
-    end
+    @info = Rails::Info.to_html
+    @page_title = "Properties"
   end
 
   def routes

railties/test/rails_info_controller_test.rb

@@ -50,11 +50,6 @@ def setup
     assert_select "table"
   end
 
-  test "info controller renders json with properties" do
-    get :properties, format: :json
-    assert_equal Rails::Info.to_json, response.body
-  end
-
   test "info controller renders with routes" do
     get :routes
     assert_response :success

railties/test/rails_info_test.rb

@@ -43,18 +43,6 @@ def test_html_includes_middleware
     end
   end
 
-  def test_json_includes_middleware
-    Rails::Info.module_eval do
-      property "Middleware", ["Rack::Lock", "Rack::Static"]
-    end
-
-    hash = JSON.parse(Rails::Info.to_json)
-    assert_includes hash.keys, "Middleware"
-    properties.value_for("Middleware").each do |value|
-      assert_includes hash["Middleware"], value
-    end
-  end
-
   private
     def properties
       Rails::Info.properties