fix(test): only test with callback

Author: BobTheBuidler

mypyc/test-data/irbuild-weakref.test

@@ -1,16 +1,3 @@
-[case testWeakrefRef]
-import weakref
-from typing import Any, Callable
-def f(x: object) -> object:
-    return weakref.ref(x)
-
-[out]
-def f(x):
-    x, r0 :: object
-L0:
-    r0 = PyWeakref_NewRef(x, NULL)
-    return r0
-
 [case testWeakrefRefCallback]
 import weakref
 from typing import Any, Callable
@@ -24,19 +11,6 @@ L0:
     r0 = PyWeakref_NewRef(x, cb)
     return r0
 
-[case testFromWeakrefRef]
-from typing import Any, Callable
-from weakref import ref
-def f(x: object) -> object:
-    return ref(x)
-
-[out]
-def f(x):
-    x, r0 :: object
-L0:
-    r0 = PyWeakref_NewRef(x, NULL)
-    return r0
-
 [case testFromWeakrefRefCallback]
 from typing import Any, Callable
 from weakref import ref

mypyc/test-data/run-weakref.test

@@ -10,13 +10,6 @@ class Object:
     """some random weakreffable object"""
     pass
 
-def test_weakref_ref():
-    obj = Object()
-    r = ref(obj)
-    assert r() is obj
-    obj = None
-    assert r() is None, r()
-
 def test_weakref_ref_with_callback():
     obj = Object()
     r = ref(obj, lambda x: x)