Revert "Use make lint"

This reverts commit ad96cc1.

Author: jfldde

.github/workflows/code_checks.yml

@@ -25,8 +25,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    - name: Run lint
-      run: make lint
+    - name: Install protoc
+      run: sudo apt-get update && sudo apt-get install -y protobuf-compiler
+    - name: Run Cargo clippy
+      run: cargo clippy --no-deps --all-targets -- -Dwarnings
 
   udeps:
     name: Check unused dependencies