[LLDB] Disable DIL QualifiedId test on Windows. (#148940)

The lldb-x86_64-win buildbot is failing on this one DIL test. Disable
the test on Windows until we can debug it on Windows.

Author: cmtice

lldb/test/API/commands/frame/var-dil/basics/QualifiedId/TestFrameVarDILQualifiedId.py

@@ -18,6 +18,7 @@ class TestFrameVarDILQualifiedId(TestBase):
     # each debug info format.
     NO_DEBUG_INFO_TESTCASE = True
 
+    @skipIfWindows
     def test_frame_var(self):
         self.build()
         lldbutil.run_to_source_breakpoint(