Remove some duplicate test additions

Author: murraybd

libmamba.yaml

@@ -188,7 +188,6 @@ test:
     - runs: |
         micromamba --help
         bash -c "micromamba shell init -s bash -p ~/micromamba; source ~/.bashrc; micromamba activate; micromamba install python=3.11 requests -c conda-forge"
-    - uses: test/tw/ldd-check
     - runs: |
         mamba-package --help
     - uses: test/tw/ldd-check