Update filters in levanter-tests workflow

Removed upstream dependencies from filters in levanter-tests workflow.

Author: rjpower

.github/workflows/levanter-tests.yaml

@@ -27,10 +27,6 @@ jobs:
             relevant:
               - 'lib/levanter/**'
               - 'lib/haliax/**'
-              # levanter depends on upstream layers (haliax, fray, zephyr, transitively iris).
-              - 'lib/iris/**'
-              - 'lib/fray/**'
-              - 'lib/zephyr/**'
               - 'uv.lock'
               - '.github/workflows/levanter-tests.yaml'