remove extra copy of the test

Author: ChristinaTrinh

test-data/unit/check-tuples.test

@@ -524,46 +524,6 @@ class A: pass
 class B: pass
 [builtins fixtures/tuple.pyi]
 
-# ----------------------------------------------------------------------------
-# Union-in-Tuple distribution
-# ----------------------------------------------------------------------------
-
-[case testTupleUnionDistributionSuccess]
-from typing import Tuple, Optional, Union
-
-def f1(x: Tuple[float, Optional[float]]) -> Union[Tuple[float, float], Tuple[float, None]]:
-    return x
-
-def f2(x: Tuple[Union[int, str], float]) -> Union[Tuple[int, float], Tuple[str, float]]:
-    return x
-
-def f3(x: Tuple[int, Union[str, None]]) -> Union[Tuple[int, str], Tuple[int, None]]:
-    return x
-
-def f4(x: Tuple[Union[int, float]]) -> Union[Tuple[int], Tuple[float]]:
-    return x
-
-def f5(x: Tuple[Union[int, str], Union[bool, None]]) -> Union[
-    Tuple[int, bool],
-    Tuple[int, None],
-    Tuple[str, bool],
-    Tuple[str, None],
-]:
-    return x
-
-[builtins fixtures/tuple.pyi]
-
-[case testTupleUnionDistributionFail]
-from typing import Tuple, Optional, Union
-
-def g1(x: Tuple[float, Optional[float]]) -> Union[Tuple[float, float], Tuple[str, float]]:
-    return x  # E: Incompatible return value type (got "Tuple[float, Optional[float]]", expected "Union[Tuple[float, float], Tuple[str, float]]")
-
-def g2(x: Tuple[float, Optional[float]]) -> Union[Tuple[float, str], Tuple[float, None]]:
-    return x  # E: Incompatible return value type (got "Tuple[float, Optional[float]]", expected "Union[Tuple[float, str], Tuple[float, None]]")
-
-[builtins fixtures/tuple.pyi]
-
 [case testMultipleAssignmentWithNonTupleRvalue]
 a: A
 b: B