[lldb] Switch expect to runCmd in TestRecursiveTypes (NFC)

[kastiglione]

Summary

Following discussion in D91193, a change made in D88792 was not quite right.
This restores the message argument, and switches from expect to runCmd.

[teemperor]

I don't think we should re-add the bogus RUN_SUCCEEDED messages here. self.runCmd("print tpi") is undocumented, but still better than wrong documentation. Beside that this LGTM, thanks!

lldb/test/API/types/TestRecursiveTypes.py

53–54

54

[kastiglione]

Remove bogus message.

lldb/test/API/types/TestRecursiveTypes.py

def print_struct(self):
             self,
             "recursive_type_main.cpp",
             self.line,
             num_expected_locations=-1,
             loc_exact=True)
 
         self.runCmd("run", RUN_SUCCEEDED)
 
-        self.expect("print tpi")
-        self.expect("print *tpi")
+        self.runCmd("print tpi")
+        self.runCmd("print *tpi")