Apply Black code formatting

Author: github-actions[bot]

src/pyclassify/eigenvalues.py

@@ -444,9 +444,6 @@ def eig(self, diag=None, off_diag=None):
         return np.array(eig), Q_triangular @ self.Q.T
 
 
-
-
-
 # import cupy as cp
 # import cupy.linalg as cpla
 # from cupyx.scipy.sparse.linalg import eigsh as eigsh_cp