diff --git a/docs/dev/README.md b/docs/dev/README.md
index d6fae52959..b91013f137 100644
--- a/docs/dev/README.md
+++ b/docs/dev/README.md
@@ -58,8 +58,6 @@ Use `env RUN_SLOW_TESTS=1 cargo test` to run the full suite.
 
 We use bors-ng to enforce the [not rocket science](https://graydon2.dreamwidth.org/1597.html) rule.
 
-You can run `cargo xtask install-pre-commit-hook` to install git-hook to run rustfmt on commit.
-
 # Launching rust-analyzer
 
 Debugging the language server can be tricky.
diff --git a/xtask/src/main.rs b/xtask/src/main.rs
index 48c0d99206..84b17ce230 100644
--- a/xtask/src/main.rs
+++ b/xtask/src/main.rs
@@ -15,7 +15,6 @@ mod tidy;
 mod install;
 mod release;
 mod dist;
-mod pre_commit;
 mod metrics;
 mod pre_cache;
 
@@ -39,10 +38,6 @@ use crate::{
 };
 
 fn main() -> Result<()> {
-    if env::args().next().map(|it| it.contains("pre-commit")) == Some(true) {
-        return pre_commit::run_hook();
-    }
-
     let _d = pushd(project_root())?;
 
     let mut args = Arguments::from_env();
@@ -103,14 +98,6 @@ FLAGS:
             finish_args(args)?;
             CodegenCmd { features }.run()
         }
-        "format" => {
-            finish_args(args)?;
-            run_rustfmt(Mode::Overwrite)
-        }
-        "install-pre-commit-hook" => {
-            finish_args(args)?;
-            pre_commit::install_hook()
-        }
         "lint" => {
             finish_args(args)?;
             run_clippy()
@@ -164,8 +151,6 @@ USAGE:
     cargo xtask <SUBCOMMAND>
 
 SUBCOMMANDS:
-    format
-    install-pre-commit-hook
     fuzz-tests
     codegen
     install
diff --git a/xtask/src/pre_commit.rs b/xtask/src/pre_commit.rs
deleted file mode 100644
index b57cf3ce2b..0000000000
--- a/xtask/src/pre_commit.rs
+++ /dev/null
@@ -1,38 +0,0 @@
-//! pre-commit hook for code formatting.
-
-use std::{fs, path::PathBuf};
-
-use anyhow::{bail, Result};
-use xshell::cmd;
-
-use crate::{project_root, run_rustfmt, Mode};
-
-// FIXME: if there are changed `.ts` files, also reformat TypeScript (by
-// shelling out to `npm fmt`).
-pub(crate) fn run_hook() -> Result<()> {
-    run_rustfmt(Mode::Overwrite)?;
-
-    let diff = cmd!("git diff --diff-filter=MAR --name-only --cached").read()?;
-
-    let root = project_root();
-    for line in diff.lines() {
-        let file = root.join(line);
-        cmd!("git update-index --add {file}").run()?;
-    }
-
-    Ok(())
-}
-
-pub(crate) fn install_hook() -> Result<()> {
-    let hook_path: PathBuf =
-        format!("./.git/hooks/pre-commit{}", std::env::consts::EXE_SUFFIX).into();
-
-    if hook_path.exists() {
-        bail!("Git hook already created");
-    }
-
-    let me = std::env::current_exe()?;
-    fs::copy(me, hook_path)?;
-
-    Ok(())
-}