[hal] Replace cargo-clippy feature with lint configuration.

CHANGELOG.md

@@ -85,6 +85,7 @@ SamplerDescriptor {
 - Reject fragment shader output `location`s > `max_color_attachments` limit. By @ErichDonGubler in [#8316](https://github.com/gfx-rs/wgpu/pull/8316).
 - WebGPU device requests now support the required limits `maxColorAttachments` and `maxColorAttachmentBytesPerSample`. By @evilpie in [#8328](https://github.com/gfx-rs/wgpu/pull/8328)
 - Reject binding indices that exceed `wgpu_types::Limits::max_bindings_per_bind_group` when deriving a bind group layout for a pipeline. By @jimblandy in [#8325](https://github.com/gfx-rs/wgpu/pull/8325).
+- Removed three features from `wgpu-hal` which did nothing useful: `"cargo-clippy"`, `"gpu-allocator"`, and `"rustc-hash"`. By @kpreid in [#8357](https://github.com/gfx-rs/wgpu/pull/8357).
 
 #### DX12
 

wgpu-hal/Cargo.toml

@@ -36,6 +36,7 @@ ignored = ["cfg_aliases"]
 
 [lints.rust]
 unexpected_cfgs = { level = "warn", check-cfg = [
+    'cfg(feature, values("cargo-clippy"))', # objc's `msg_send` macro injects this in our code https://github.com/SSheldon/rust-objc/issues/125
     'cfg(web_sys_unstable_apis)',           # web-sys uses this
 ] }
 
@@ -182,14 +183,6 @@ internal_error_panic = []
 # Tracks validation errors in a `VALIDATION_CANARY` static.
 validation_canary = ["dep:parking_lot"]
 
-###################
-### Workarounds ###
-###################
-
-# objc's `msg_send` macro injects this in our code https://github.com/SSheldon/rust-objc/issues/125
-# You shouldn't ever enable this feature.
-cargo-clippy = []
-
 [[example]]
 name = "halmark"