Remove the expected error from testDataclassInitVarRedefinitionNoCrash

Author: roberfi

test-data/unit/check-dataclasses.test

@@ -2734,6 +2734,6 @@ class ClassA:
 class ClassB(ClassA):
     value: InitVar[int]
 
-    def value(self) -> int:  # E: Name "value" already defined on line 10
+    def value(self) -> int:
         return 0
 [builtins fixtures/dict.pyi]