test_energies: don't check single precision

test/test_energies.py

@@ -22,7 +22,7 @@ import resolve as rve
 
 from .common import list2fixture, setup_function, teardown_function
 
-dtype = list2fixture([np.complex64, np.complex128, np.float32, np.float64])
+dtype = list2fixture([np.complex128, np.float64])
 with_mask = list2fixture([False, True])
 with_multiplicative = list2fixture([False, True])