[lldb] Re-enable TestStepNoDebug.py on AS

This test showed up as an unexpected pass and is now consistently
passing on Apple Silicon.

Author: JDevlieghere

lldb/test/API/functionalities/step-avoids-no-debug/TestStepNoDebug.py

@@ -50,7 +50,6 @@ def test_step_over_with_python(self):
         archs=["i386"],
         oslist=no_match(["freebsd"]),
         bugnumber="llvm.org/pr28549")
-    @expectedFailureAll(archs=["arm64"], bugnumber="<rdar://problem/34026777>")  # lldb doesn't step past last source line in function on arm64
     @expectedFailureAll(archs=["aarch64"], oslist=["freebsd", "linux"],
                         bugnumber="llvm.org/pr44057")
     def test_step_in_with_python(self):