remove xdist

Author: bmos

pyproject.toml

@@ -47,7 +47,6 @@ dev = [
     "bandit[sarif]==1.8.3",
     "coverage==7.8.0",
     "pytest-cov==6.0.0",
-    "pytest-xdist==3.6.1",
     "pytest==8.3.5",
     "ruff==0.11.4",
 ]