Clean up deps for file_finder, language_selector, task, rpc, storybook (#8353)

Following-up on #8330

Invocation
```bash
cargo-machete --with-metadata --skip-target-dir --fix
````

There is more stuff to fix, but it chokes on `async-lock`:
```
cargo-machete found the following unused dependencies in /x/Code/zed:
rpc -- /x/Code/zed/crates/rpc/Cargo.toml:
        async_lock
        prost_build
        serde_derive
Error: Dependency async_lock not found
```

Release Notes:
- N/A

crates/storybook/Cargo.toml

@@ -11,7 +11,6 @@ path = "src/storybook.rs"
 
 [dependencies]
 anyhow.workspace = true
-chrono = "0.4"
 clap = { version = "4.4", features = ["derive", "string"] }
 collab_ui = { workspace = true, features = ["stories"] }
 ctrlc = "3.4"
@@ -20,21 +19,17 @@ editor.workspace = true
 fuzzy.workspace = true
 gpui.workspace = true
 indoc.workspace = true
-itertools = "0.11.0"
 language.workspace = true
 log.workspace = true
 menu.workspace = true
 picker.workspace = true
 rust-embed.workspace = true
-serde.workspace = true
 settings.workspace = true
 simplelog = "0.9"
-smallvec.workspace = true
 story.workspace = true
 strum = { version = "0.25.0", features = ["derive"] }
 theme.workspace = true
 ui = { workspace = true, features = ["stories"] }
-util.workspace = true
 
 [dev-dependencies]
 gpui = { workspace = true, features = ["test-support"] }