Remove unused dependencies (#33189)

I verified it after running `cargo shear`.

https://crates.io/crates/cargo-shear

Release Notes:

- N/A

Cargo.toml

@@ -455,7 +455,6 @@ futures-batch = "0.6.1"
 futures-lite = "1.13"
 git2 = { version = "0.20.1", default-features = false }
 globset = "0.4"
-hashbrown = "0.15.3"
 handlebars = "4.3"
 heck = "0.5"
 heed = { version = "0.21.0", features = ["read-txn-no-tls"] }
@@ -483,7 +482,6 @@ log = { version = "0.4.16", features = ["kv_unstable_serde", "serde"] }
 lsp-types = { git = "https://github.com/zed-industries/lsp-types", rev = "c9c189f1c5dd53c624a419ce35bc77ad6a908d18" }
 markup5ever_rcdom = "0.3.0"
 metal = "0.29"
-mlua = { version = "0.10", features = ["lua54", "vendored", "async", "send"] }
 moka = { version = "0.12.10", features = ["sync"] }
 naga = { version = "25.0", features = ["wgsl-in"] }
 nanoid = "0.4"
@@ -518,7 +516,6 @@ rand = "0.8.5"
 rayon = "1.8"
 ref-cast = "1.0.24"
 regex = "1.5"
-repair_json = "0.1.0"
 reqwest = { git = "https://github.com/zed-industries/reqwest.git", rev = "951c770a32f1998d6e999cef3e59e0013e6c4415", default-features = false, features = [
     "charset",
     "http2",
@@ -550,7 +547,6 @@ serde_repr = "0.1"
 sha2 = "0.10"
 shellexpand = "2.1.0"
 shlex = "1.3.0"
-signal-hook = "0.3.17"
 simplelog = "0.12.2"
 smallvec = { version = "1.6", features = ["union"] }
 smol = "2.0"