diff --git a/.gitmodules b/.gitmodules
index 40e6fc2c19db0..3252894e72bd6 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -28,9 +28,6 @@
 [submodule "library/stdarch"]
 	path = library/stdarch
 	url = https://github.com/rust-lang/stdarch.git
-[submodule "src/doc/rustc-dev-guide"]
-	path = src/doc/rustc-dev-guide
-	url = https://github.com/rust-lang/rustc-dev-guide.git
 [submodule "src/doc/edition-guide"]
 	path = src/doc/edition-guide
 	url = https://github.com/rust-lang/edition-guide.git
diff --git a/rustfmt.toml b/rustfmt.toml
index af807aa6f739e..f16f32d9f6337 100644
--- a/rustfmt.toml
+++ b/rustfmt.toml
@@ -23,7 +23,6 @@ ignore = [
     "src/doc/nomicon",
     "src/doc/reference",
     "src/doc/rust-by-example",
-    "src/doc/rustc-dev-guide",
     "src/llvm-project",
     "src/tools/cargo",
     "src/tools/clippy",
diff --git a/src/bootstrap/builder.rs b/src/bootstrap/builder.rs
index f1a160250dbe1..e71a1f1d3eaab 100644
--- a/src/bootstrap/builder.rs
+++ b/src/bootstrap/builder.rs
@@ -413,7 +413,6 @@ impl<'a> Builder<'a> {
                 test::UnstableBook,
                 test::RustcBook,
                 test::LintDocs,
-                test::RustcGuide,
                 test::EmbeddedBook,
                 test::EditionGuide,
                 test::Rustfmt,
diff --git a/src/bootstrap/test.rs b/src/bootstrap/test.rs
index d9132f20d85b3..bf52036b89a08 100644
--- a/src/bootstrap/test.rs
+++ b/src/bootstrap/test.rs
@@ -1536,34 +1536,6 @@ fn markdown_test(builder: &Builder<'_>, compiler: Compiler, markdown: &Path) ->
     }
 }
 
-#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
-pub struct RustcGuide;
-
-impl Step for RustcGuide {
-    type Output = ();
-    const DEFAULT: bool = false;
-    const ONLY_HOSTS: bool = true;
-
-    fn should_run(run: ShouldRun<'_>) -> ShouldRun<'_> {
-        run.path("src/doc/rustc-dev-guide")
-    }
-
-    fn make_run(run: RunConfig<'_>) {
-        run.builder.ensure(RustcGuide);
-    }
-
-    fn run(self, builder: &Builder<'_>) {
-        let src = builder.src.join("src/doc/rustc-dev-guide");
-        let mut rustbook_cmd = builder.tool_cmd(Tool::Rustbook);
-        let toolstate = if try_run(builder, rustbook_cmd.arg("linkcheck").arg(&src)) {
-            ToolState::TestPass
-        } else {
-            ToolState::TestFail
-        };
-        builder.save_toolstate("rustc-dev-guide", toolstate);
-    }
-}
-
 #[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
 pub struct CrateLibrustc {
     compiler: Compiler,
diff --git a/src/bootstrap/toolstate.rs b/src/bootstrap/toolstate.rs
index 205524ad84fb7..fd95634fed64e 100644
--- a/src/bootstrap/toolstate.rs
+++ b/src/bootstrap/toolstate.rs
@@ -85,11 +85,8 @@ static STABLE_TOOLS: &[(&str, &str)] = &[
 // We do require that we checked whether they build or not on the tools builder,
 // though, as otherwise we will be unable to file an issue if they start
 // failing.
-static NIGHTLY_TOOLS: &[(&str, &str)] = &[
-    ("miri", "src/tools/miri"),
-    ("embedded-book", "src/doc/embedded-book"),
-    // ("rustc-dev-guide", "src/doc/rustc-dev-guide"),
-];
+static NIGHTLY_TOOLS: &[(&str, &str)] =
+    &[("miri", "src/tools/miri"), ("embedded-book", "src/doc/embedded-book")];
 
 fn print_error(tool: &str, submodule: &str) {
     eprintln!();
diff --git a/src/doc/rustc-dev-guide b/src/doc/rustc-dev-guide
deleted file mode 160000
index 7adfab42bab04..0000000000000
--- a/src/doc/rustc-dev-guide
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 7adfab42bab045a848126895c2f1e09927c1331a
diff --git a/src/tools/tidy/src/style.rs b/src/tools/tidy/src/style.rs
index 9f68c55ec975c..6201fa2e64b80 100644
--- a/src/tools/tidy/src/style.rs
+++ b/src/tools/tidy/src/style.rs
@@ -173,7 +173,6 @@ fn skip_markdown_path(path: &Path) -> bool {
         "src/doc/nomicon",
         "src/doc/reference",
         "src/doc/rust-by-example",
-        "src/doc/rustc-dev-guide",
     ];
     SKIP_MD.iter().any(|p| path.ends_with(p))
 }