Revert "Disable test that fails on bot"

This reverts commit e214e46e748881e6418ffac374a87d6ad30fcfea.

I have reverted the swift commit that was causing this failure.

rdar://35264910
diff --git a/packages/Python/lldbsuite/test/repl/pounwrapping/TestPOUnwrapping.py b/packages/Python/lldbsuite/test/repl/pounwrapping/TestPOUnwrapping.py
index f595b5c..171cc83 100644
--- a/packages/Python/lldbsuite/test/repl/pounwrapping/TestPOUnwrapping.py
+++ b/packages/Python/lldbsuite/test/repl/pounwrapping/TestPOUnwrapping.py
@@ -18,11 +18,7 @@
 class REPLBasicTestCase(lldbrepl.REPLTest):
 
     mydir = lldbrepl.REPLTest.compute_mydir(__file__)
-    @decorators.expectedFailureAll(
-        oslist=[
-            "macosx",
-            "linux"],
-        bugnumber="rdar://35264910")
+
     def doTest(self):
         self.command(
             '''class Foo<T,U> {