Update TestPrintStackTraces XFAIL once more

it seems the failure happens also with clang. The main thing which triggers the failure is
architecture.

llvm-svn: 240652
diff --git a/lldb/test/python_api/lldbutil/process/TestPrintStackTraces.py b/lldb/test/python_api/lldbutil/process/TestPrintStackTraces.py
index d70417c..ce0293b 100644
--- a/lldb/test/python_api/lldbutil/process/TestPrintStackTraces.py
+++ b/lldb/test/python_api/lldbutil/process/TestPrintStackTraces.py
@@ -18,7 +18,7 @@
         # Find the line number to break inside main().
         self.line = line_number('main.cpp', '// Set break point at this line.')
 
-    @expectedFailureAll("llvm.org/pr23043", ["linux"], "gcc", archs=["i386"]) # We are unable to produce a backtrace of the main thread when the thread is blocked in fgets
+    @expectedFailureAll("llvm.org/pr23043", ["linux"], archs=["i386"]) # We are unable to produce a backtrace of the main thread when the thread is blocked in fgets
     @python_api_test
     def test_stack_traces(self):
         """Test SBprocess and SBThread APIs with printing of the stack traces."""