1 files changed, 1 insertions, 6 deletions
diff --git a/coverage/parser.py b/coverage/parser.py
index 044839d8..a5ad2f5c 100644
--- a/coverage/parser.py
+++ b/coverage/parser.py
@@ -14,7 +14,7 @@ from coverage import env
 from coverage.bytecode import code_objects
 from coverage.debug import short_stack
 from coverage.exceptions import NoSource, NotPython, _StopEverything
-from coverage.misc import contract, join_regex, new_contract, nice_pair
+from coverage.misc import contract, join_regex, nice_pair
 from coverage.phystokens import generate_tokens
 
 
@@ -603,11 +603,6 @@ class ArcStart(collections.namedtuple("Arc", "lineno, cause")):
         return super().__new__(cls, lineno, cause)
 
 
-# Define contract words that PyContract doesn't have.
-# ArcStarts is for a list or set of ArcStart's.
-new_contract('ArcStarts', lambda seq: all(isinstance(x, ArcStart) for x in seq))
-
-
 class NodeList:
     """A synthetic fictitious node, containing a sequence of nodes.