TST: restrict abacusutils tests

tox.ini

@@ -333,12 +333,12 @@ allowlist_externals =
 extras =
 commands_pre =
     bash -c "pip freeze -q | grep 'asdf @' > {env_tmp_dir}/requirements.txt"
+    #pip install -vU setuptools wheel scipy Cython 'numpy<2'  # for classy and corrfunc
+    #pip install --no-build-isolation classy corrfunc
+    pip install abacusutils pytest
     git clone https://github.com/abacusorg/abacusutils.git
-    pip install -vU setuptools wheel scipy Cython 'numpy<2'  # for classy and corrfunc
-    pip install --no-build-isolation classy corrfunc
-    pip install -e abacusutils[test]
     pip install -r {env_tmp_dir}/requirements.txt
     bash -c "echo '' > pytest.ini"
     pip freeze
 commands =
-    pytest abacusutils
+    pytest abacusutils/tests/test_data.py