Manual builds aren't needed before test_full.sh

Author: cuviper

Diff for: .github/workflows/ci.yaml

@@ -26,7 +26,6 @@ jobs:
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
-      - run: cargo build
       - run: ./ci/test_full.sh
 
   # try a target that doesn't have std at all

Diff for: .github/workflows/master.yaml

@@ -24,5 +24,4 @@ jobs:
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
-      - run: cargo build
       - run: ./ci/test_full.sh

Diff for: .github/workflows/pr.yaml

@@ -20,7 +20,6 @@ jobs:
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
-      - run: cargo build
       - run: ./ci/test_full.sh
 
   fmt: