Workflow: removed rust setup from the tests, as it is installed on device

.github/workflows/engine_test.yml

@@ -12,11 +12,6 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Set up Rust
-        uses: actions/setup-rust@v1
-        with:
-          rust-version: stable
-
       - name: Run Engine tests
         run: |
           cd engine

.github/workflows/server_test.yml

@@ -12,11 +12,6 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Set up Rust
-        uses: actions/setup-rust@v1
-        with:
-          rust-version: stable
-
       - name: Run Server tests
         run: |
           cd server

.github/workflows/ui_test.yml

@@ -12,11 +12,6 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Set up Rust
-        uses: actions/setup-rust@v1
-        with:
-          rust-version: stable
-
       - name: Run UI tests
         run: |
           cd ui