diff --git a/libcove/lib/common.py b/libcove/lib/common.py
index 4465342..521969c 100644
--- a/libcove/lib/common.py
+++ b/libcove/lib/common.py
@@ -33,43 +33,6 @@
 REQUIRED_RE = re.compile(r"^'([^']+)'")
 
 
-# This function was inlined in jsonschema 4.
-def types_msg(instance, types):
-    """
-    Create an error message for a failure to match the given types.
-
-    If the ``instance`` is an object and contains a ``name`` property, it will
-    be considered to be a description of that object and used as its type.
-
-    Otherwise the message is simply the reprs of the given ``types``.
-    """
-
-    reprs = []
-    for type in types:
-        try:
-            reprs.append(repr(type["name"]))
-        except Exception:
-            reprs.append(repr(type))
-    return "%r is not of type %s" % (instance, ", ".join(reprs))
-
-
-def type_validator(validator, types, instance, schema):
-    """
-    Replace the jsonschema type validator to use for-loop instead of slower
-    any() with generator expression.
-
-    https://github.com/OpenDataServices/lib-cove/pull/66
-
-    """
-    types = ensure_list(types)
-
-    for type in types:
-        if validator.is_type(instance, type):
-            break
-    else:
-        yield ValidationError(types_msg(instance, types))
-
-
 class TypeChecker:
     def is_type(self, instance, type):
         if type == "string":
@@ -97,9 +60,6 @@ def is_type(self, instance, type):
 # Otherwise we could cause conflicts with other software in the same process.
 validator = jsonschema.validators.extend(
     jsonschema.validators.Draft4Validator,
-    validators={
-        "type": type_validator,
-    },
     type_checker=TypeChecker(),
 )