more build tweaks?

.github/workflows/ci.yml

@@ -7,7 +7,7 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Download LLVM, botan
-        run: sudo apt-get install llvm llvm-11 clang-11 libbotan-2-dev botan
+        run: sudo apt-get install llvm-11 clang-11 libbotan-2-dev botan
       - name: build odin
         run: ./build_odin.sh release
       - name: Odin version