fVDB PYTHONPATH test fix

Signed-off-by: Jonathan Swartz <[email protected]>

.github/workflows/fvdb.yml

@@ -66,6 +66,10 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      - name: Unset PYTHONPATH
+        run: |
+          unset PYTHONPATH
+
       - name: Set up fvdb_build Conda env
         uses: conda-incubator/setup-miniconda@v3
         with:
@@ -77,7 +81,6 @@ jobs:
 
       - name: Buid fvdb
         run: |
-          conda activate fvdb_build &&
           cd fvdb &&
           TORCH_CUDA_ARCH_LIST="7.0;7.5;8.0;8.6+PTX" MAX_JOBS=$(($(nproc) < $(free -g | awk '/^Mem:/{jobs=int($7/2.5); if(jobs<1) jobs=1; print jobs}') ? $(nproc) : $(free -g | awk '/^Mem:/{jobs=int($7/2.5); if(jobs<1) jobs=1; print jobs}'))) python setup.py bdist_wheel --dist-dir=dist &&
           tree
@@ -109,6 +112,11 @@ jobs:
         shell: bash -el {0}
     steps:
       - uses: actions/checkout@v4
+
+      - name: Unset PYTHONPATH
+        run: |
+          unset PYTHONPATH
+
       - name: Set up fvdb_test Conda env
         uses: conda-incubator/setup-miniconda@v3
         with:
@@ -153,6 +161,11 @@ jobs:
         shell: bash -el {0}
     steps:
       - uses: actions/checkout@v4
+
+      - name: Unset PYTHONPATH
+        run: |
+          unset PYTHONPATH
+          
       - name: Set up fvdb_test Conda env
         uses: conda-incubator/setup-miniconda@v3
         with: