Skip downloading test crates in CI jobs that don't need them

.github/workflows/abi-cafe.yml

@@ -59,9 +59,6 @@ jobs:
       if: matrix.env.TARGET_TRIPLE == 'x86_64-pc-windows-gnu'
       run: rustup set default-host x86_64-pc-windows-gnu
 
-    - name: Prepare dependencies
-      run: ./y.sh prepare
-
     - name: Build
       run: ./y.sh build --sysroot none
 

.github/workflows/main.yml

@@ -165,9 +165,6 @@ jobs:
         sudo apt update
         sudo apt install -y hyperfine
 
-    - name: Prepare dependencies
-      run: ./y.sh prepare
-
     - name: Build
       run: ./y.sh build --sysroot none
 
@@ -216,9 +213,6 @@ jobs:
       if: matrix.os == 'windows-latest' && matrix.env.TARGET_TRIPLE == 'x86_64-pc-windows-gnu'
       run: rustup set default-host x86_64-pc-windows-gnu
 
-    - name: Prepare dependencies
-      run: ./y.sh prepare
-
     - name: Build backend
       run: ./y.sh build --sysroot none
 

.github/workflows/rustc.yml

@@ -22,9 +22,6 @@ jobs:
         path: build/cg_clif
         key: ${{ runner.os }}-rustc-test-cargo-build-target-${{ hashFiles('rust-toolchain', 'Cargo.lock') }}
 
-    - name: Prepare dependencies
-      run: ./y.sh prepare
-
     - name: Test
       run: ./scripts/test_bootstrap.sh
 
@@ -50,8 +47,5 @@ jobs:
         sudo apt update
         sudo apt install -y ripgrep
 
-    - name: Prepare dependencies
-      run: ./y.sh prepare
-
     - name: Test
       run: ./scripts/test_rustc_tests.sh