Remove dtolnay's rust-toolchain action (#442)

* Remove dtolnay's rust-toolchain action

I believe our rust-toolchain.toml handles its use case exactly.

I don't believe this'll work, as it'd require rustup install a cargo stub
before any toolchain is installed, yet I want to confirm it doesn't.

* Place quotes around nightly toolchain version

* Put toolchain before options to resolve what appears to be a bug in rustup's help strings

* Add wasm32-unkknown-unknown to clippy workflow

.github/actions/build-dependencies/action.yml

@@ -7,16 +7,6 @@ inputs:
     require: true
     default:
 
-  rust-toolchain:
-    description: "Rust toolchain to install"
-    required: false
-    default: 1.74.0
-
-  rust-components:
-    description: "Rust components to install"
-    required: false
-    default: rust-src, clippy
-
 runs:
   using: "composite"
   steps:
@@ -47,12 +37,5 @@ runs:
         svm install 0.8.16
         svm use 0.8.16
 
-    - name: Install Rust
-      uses: dtolnay/rust-toolchain@5cb429dd810e16ff67df78472fa81cf760f4d1c0
-      with:
-        toolchain: ${{ inputs.rust-toolchain }}
-        components: ${{ inputs.rust-components }}
-        targets: wasm32-unknown-unknown
-
     # - name: Cache Rust
     #   uses: Swatinem/rust-cache@a95ba195448af2da9b00fb742d14ffaaf3c21f43