Update test requirements

Author: Sparks29032

conda-recipe/meta.yaml

@@ -36,6 +36,10 @@ requirements:
     - pytest
 
 test:
+  # Put any additional test requirements here
+  requires:
+    - pytest
+
   # Python imports
   imports:
     - diffpy
@@ -50,10 +54,6 @@ test:
   # You can also put a file called run_test.py in the recipe that will be run
   # at test time.
 
-  requires:
-    # Put any additional test requirements here.  For example
-    # - nose
-
 about:
   home: https://github.com/diffpy/diffpy.utils
   summary: Shared utilities for diffpy packages.