[lldb] [test] Remove duplicate xfail for Testtypedef

The @expectedFailureAll(compiler="clang") decorator works correctly
on FreeBSD these days, so it is sufficient.

lldb/test/API/lang/c/typedef/Testtypedef.py

@@ -13,9 +13,6 @@ class TypedefTestCase(TestBase):
     mydir = TestBase.compute_mydir(__file__)
 
     @expectedFailureAll(compiler="clang", bugnumber="llvm.org/pr19238")
-    @expectedFailureAll(
-        oslist=["freebsd"],
-        bugnumber="llvm.org/pr25626 expectedFailureClang fails on FreeBSD")
     def test_typedef(self):
         """Test 'image lookup -t a' and check for correct display at different scopes."""
         self.build()