diff --git a/README.md b/README.md
index a88d1fc33..15c4c48a2 100644
--- a/README.md
+++ b/README.md
@@ -65,11 +65,9 @@ To write tests that will be run in the browser using QUnit, add your test files
 
 - [How to add custom build to Chrome](./docs/add-to-chrome.md)
 - [How to add custom build to Firefox](./docs/add-to-firefox.md)
-- [How to develop a live-reloading UI](./docs/ui-dev-mode.md)
 - [How to add a new translation to MetaMask](./docs/translating-guide.md)
 - [Publishing Guide](./docs/publishing.md)
 - [The MetaMask Team](./docs/team.md)
-- [How to develop an in-browser mocked UI](./docs/ui-mock-mode.md)
 - [How to live reload on local dependency changes](./docs/developing-on-deps.md)
 - [How to add new networks to the Provider Menu](./docs/adding-new-networks.md)
 - [How to manage notices that appear when the app starts up](./docs/notices.md)
diff --git a/docs/README.md b/docs/README.md
index fd26b0c20..c6e7dae6c 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -12,9 +12,7 @@ To learn how to develop MetaMask-compatible applications, visit our [Developer D
 
 - [How to add custom build to Chrome](./add-to-chrome.md)
 - [How to add custom build to Firefox](./add-to-firefox.md)
-- [How to develop a live-reloading UI](./ui-dev-mode.md)
 - [Publishing Guide](./publishing.md)
-- [How to develop an in-browser mocked UI](./ui-mock-mode.md)
 - [How to live reload on local dependency changes](./developing-on-deps.md)
 - [How to add new networks to the Provider Menu](./adding-new-networks.md)
 - [How to manage notices that appear when the app starts up](./notices.md)
diff --git a/docs/ui-dev-mode.md b/docs/ui-dev-mode.md
deleted file mode 100644
index df49d8b04..000000000
--- a/docs/ui-dev-mode.md
+++ /dev/null
@@ -1,6 +0,0 @@
-# Running UI Dev Mode
-
-You can run `npm run ui`, and your browser should open a live-reloading demo version of the plugin UI.
-
-Some actions will crash the app, so this is only for tuning aesthetics, but it allows live-reloading styles, which is a much faster feedback loop than reloading the full extension.
-
diff --git a/docs/ui-mock-mode.md b/docs/ui-mock-mode.md
deleted file mode 100644
index bb54dc471..000000000
--- a/docs/ui-mock-mode.md
+++ /dev/null
@@ -1,8 +0,0 @@
-### Developing on UI with Mocked Background Process
-
-You can run `npm run mock` and your browser should open a live-reloading demo version of the plugin UI, just like the `npm run ui`, except that it tries to actually perform all normal operations.
-
-It does not yet connect to a real blockchain (this could be a good test feature later, connecting to a test blockchain), so only local operations work.
-
-You can reset the mock ui at any time with the `Reset` button at the top of the screen.
-