uninstall existing TE

Author: Rohan-Bierneni

.github/workflows/UnitTests.yml

@@ -76,7 +76,7 @@ jobs:
 
       - name: Print dependencies
         run: |
-          # pip uninstall -y transformer-engine transformer-engine-jax transformer-engine-cu12
+          pip uninstall -y transformer-engine transformer-engine-jax transformer-engine-cu12
           pip install -U transformer-engine==2.6.0
           # pip uninstall -y transformer-engine-cu12
           # pip install transformer-engine-cu13