re-enable all tests

Author: lorepirri

recipe/meta.yaml

@@ -44,8 +44,7 @@ test:
     - pytest-xdist >=2.5.0
   commands:
     - pip check
-      # test-{1-3,5} are having ValueError: operands could not be broadcast together with shapes.
-    - pytest -vv tests -k "not (test_1 or test_2 or test_3 or test_5)"
+    - pytest -vv tests
 
 about:
   home: https://github.com/MIT-LCP/wfdb-python