Remove unused op_args

kanren/assoccomm.py

@@ -34,32 +34,22 @@
 
 from toolz import sliding_window
 
-from unification import isvar, var, reify, unify
+from unification import reify, unify, var
 
-from cons.core import ConsError, ConsPair, car, cdr
+from cons.core import ConsPair, car, cdr
 
 from etuples import etuple
 
 from .core import conde, eq, ground_order, lall, succeed
 from .goals import itero, permuteo
 from .facts import Relation
 from .graph import term_walko
-from .term import term, operator, arguments
+from .term import term
 
 associative = Relation("associative")
 commutative = Relation("commutative")
 
 
-def op_args(x):
-    """Break apart x into an operation and tuple of args."""
-    if isvar(x):
-        return None, None
-    try:
-        return operator(x), arguments(x)
-    except (ConsError, NotImplementedError):
-        return None, None
-
-
 def flatten_assoc_args(op_predicate, items):
     for i in items:
         if isinstance(i, ConsPair) and op_predicate(car(i)):

tests/test_assoccomm.py

@@ -18,7 +18,6 @@
     eq_assoc,
     eq_assoccomm,
     assoc_args,
-    op_args,
     flatten_assoc_args,
     assoc_flatten,
 )
@@ -84,12 +83,6 @@ def results(g, s=None):
     return tuple(g(s))
 
 
-def test_op_args():
-    assert op_args(var()) == (None, None)
-    assert op_args(add(1, 2, 3)) == (Add, (1, 2, 3))
-    assert op_args("foo") == (None, None)
-
-
 def test_eq_comm():
     x, y, z = var(), var(), var()