Remove unused parameter in Coleman integral

Author: Eloitor

src/sage/modular/btquotients/pautomorphicform.py

@@ -2084,8 +2084,7 @@ def F(z, level=level, method=method):
 
     # So far we cannot break it into two integrals because of the pole
     # at infinity.
-    def coleman(self, t1, t2, E=None, method='moments', mult=False,
-                delta=-1):
+    def coleman(self, t1, t2, E=None, method='moments', mult=False):
         r"""
         If ``self`` is a `p`-adic automorphic form that
         corresponds to a rigid modular form, then this computes the