ci: remove cargo risczero install

Author: MarcosNicolau

.github/workflows/build-and-test-rust.yml

@@ -38,7 +38,6 @@ jobs:
          /home/runner/.risc0/bin/rzup install
          /home/runner/.risc0/bin/rzup install cargo-risczero 2.0.1
          /home/runner/.risc0/bin/rzup default cargo-risczero 2.0.1
-         cargo risczero install
 
       - name: Cache Rust dependencies
         uses: actions/cache@v3
@@ -105,7 +104,6 @@ jobs:
          /home/runner/.risc0/bin/rzup install
          /home/runner/.risc0/bin/rzup install cargo-risczero 2.0.1
          /home/runner/.risc0/bin/rzup default cargo-risczero 2.0.1
-         cargo risczero install
 
       - name: Cache Rust dependencies
         uses: actions/cache@v3