[test] Delete some xfailed lldb-mi tests

This is a first pass at removing some lldb-mi tests which have been
xfailed and unmaintained for a while. We have open PRs for most of these
tests already. I've opened up the following additional PRs:

  llvm.org/PR36739 - lldb-mi driver exits properly
  llvm.org/PR36740 - lldb-mi -gdb-set and -gdb-show
  llvm.org/PR36741 - lldb-mi -symbol-xxx

The motivation here is to address timeout and pexpect-related issues in
the test suite. This was discussed on lldb-dev in the thread: "increase
timeout for tests?".

After this change, the lldb-mi tests seem to be in better health (on
Darwin at least). I consistently get:

$ ./bin/llvm-dotest -p TestMi
===================
Test Result Summary
===================
Test Methods:        101
Reruns:                0
Success:              88
Expected Failure:      0
Failure:               0
Error:                 0
Exceptional Exit:      0
Unexpected Success:    0
Skip:                 13
Timeout:               0
Expected Timeout:      0

llvm-svn: 327552

1 files changed, 0 insertions, 97 deletions

diff --git a/lldb/packages/Python/lldbsuite/test/tools/lldb-mi/TestMiExit.py b/lldb/packages/Python/lldbsuite/test/tools/lldb-mi/TestMiExit.py
deleted file mode 100644
index d902b9deff8..00000000000
--- a/lldb/packages/Python/lldbsuite/test/tools/lldb-mi/TestMiExit.py
+++ /dev/null
@@ -1,97 +0,0 @@
-"""
-Test that the lldb-mi driver exits properly.
-"""
-
-from __future__ import print_function
-
-import lldbmi_testcase
-from lldbsuite.test.decorators import *
-from lldbsuite.test.lldbtest import *
-from lldbsuite.test import lldbutil
-
-
-class MiExitTestCase(lldbmi_testcase.MiTestCaseBase):
-
-    mydir = TestBase.compute_mydir(__file__)
-
-    @expectedFailureAll(
-        oslist=["windows"],
-        bugnumber="llvm.org/pr22274: need a pexpect replacement for windows")
-    @skipIfDarwin   # pexpect is known to be unreliable on Darwin
-    @skipIfFreeBSD  # llvm.org/pr22411: Failure presumably due to known thread races
-    @skipIfRemote   # We do not currently support remote debugging via the MI.
-    def test_lldbmi_gdb_exit(self):
-        """Test that '-gdb-exit' terminates local debug session and exits."""
-
-        self.spawnLldbMi(args=None)
-
-        # Load executable
-        self.runCmd("-file-exec-and-symbols %s" % self.myexe)
-        self.expect("\^done")
-
-        # Run to main
-        self.runCmd("-break-insert -f main")
-        self.expect("\^done,bkpt={number=\"1\"")
-        self.runCmd("-exec-run")
-        self.expect("\^running")
-        self.expect("\*stopped,reason=\"breakpoint-hit\"")
-
-        # Test -gdb-exit: try to exit and check that program is finished
-        self.runCmd("-gdb-exit")
-        self.expect("\^exit")
-        import pexpect
-        self.expect(pexpect.EOF)
-
-    @expectedFailureAll(
-        oslist=["windows"],
-        bugnumber="llvm.org/pr22274: need a pexpect replacement for windows")
-    @skipIfDarwin   # pexpect is known to be unreliable on Darwin
-    @skipIfFreeBSD  # llvm.org/pr22411: Failure presumably due to known thread races
-    @skipIfRemote   # We do not currently support remote debugging via the MI.
-    def test_lldbmi_quit(self):
-        """Test that 'quit' exits immediately."""
-
-        self.spawnLldbMi(args=None)
-
-        # Load executable
-        self.runCmd("-file-exec-and-symbols %s" % self.myexe)
-        self.expect("\^done")
-
-        # Run to main
-        self.runCmd("-break-insert -f main")
-        self.expect("\^done,bkpt={number=\"1\"")
-        self.runCmd("-exec-run")
-        self.expect("\^running")
-        self.expect("\*stopped,reason=\"breakpoint-hit\"")
-
-        # Test quit: try to exit and check that program is finished
-        self.runCmd("quit")
-        import pexpect
-        self.expect(pexpect.EOF)
-
-    @expectedFailureAll(
-        oslist=["windows"],
-        bugnumber="llvm.org/pr22274: need a pexpect replacement for windows")
-    @skipIfDarwin   # pexpect is known to be unreliable on Darwin
-    @skipIfFreeBSD  # llvm.org/pr22411: Failure presumably due to known thread races
-    @skipIfRemote   # We do not currently support remote debugging via the MI.
-    def test_lldbmi_q(self):
-        """Test that 'q' exits immediately."""
-
-        self.spawnLldbMi(args=None)
-
-        # Load executable
-        self.runCmd("-file-exec-and-symbols %s" % self.myexe)
-        self.expect("\^done")
-
-        # Run to main
-        self.runCmd("-break-insert -f main")
-        self.expect("\^done,bkpt={number=\"1\"")
-        self.runCmd("-exec-run")
-        self.expect("\^running")
-        self.expect("\*stopped,reason=\"breakpoint-hit\"")
-
-        # Test q: try to exit and check that program is finished
-        self.runCmd("q")
-        import pexpect
-        self.expect(pexpect.EOF)