Removed dcor as explicit import

Author: PauBadiaM

src/decoupler/tl/_rankby_order.py

@@ -6,7 +6,6 @@
 import scipy.stats as sts
 import scipy.sparse as sps
 from anndata import AnnData
-import dcor
 
 from decoupler._odeps import dcor, _check_import
 from decoupler._docs import docs