[lldb][test] Remove xfails from static lib tests on Windows

Originally failing due to https://github.com/llvm/llvm-project/issues/24901,
but since https://github.com/llvm/llvm-project/pull/110837 the
test is passing.

Already removed one xfail but didn't realise we had more for
the same bug.

lldb/test/API/functionalities/archives/TestBSDArchives.py

@@ -121,10 +121,6 @@ class BSDArchivesTestCase(TestBase):
 
     @skipIfRemote
     @skipIf(compiler="clang", compiler_version=["<", "12.0"])
-    @expectedFailureAll(
-        oslist=["windows"],
-        bugnumber="llvm.org/pr24527.  Makefile.rules doesn't know how to build static libs on Windows",
-    )
     def test_archive_specifications(self):
         """
         Create archives and make sure the information we get when retrieving

lldb/test/API/macosx/duplicate-archive-members/TestDuplicateMembers.py

@@ -8,10 +8,6 @@ from lldbsuite.test import lldbutil
 
 
 class BSDArchivesTestCase(TestBase):
-    @expectedFailureAll(
-        oslist=["windows"],
-        bugnumber="llvm.org/pr24527.  Makefile.rules doesn't know how to build static libs on Windows",
-    )
     def test(self):
         """Break inside a() and b() defined within libfoo.a."""
         self.build()