message: [lldb] [test/lldb-vscode] Use os.path.dirname() [NFC]
  Replace os.path.split()[0] with os.path.dirname().  Suggested by Pavel
  Labath in D65432.
diff: @@ -68,7 +68,7 @@ class TestVSCode_launch(lldbvscode_testcase.VSCodeTestCaseBase):
  directory.
  '''
  program = self.getBuildArtifact("a.out")
  - program_parent_dir = os.path.split(os.path.split(program)[0])[0]
  + program_parent_dir = os.path.dirname(os.path.dirname(program))
  self.build_and_launch(program,
  cwd=program_parent_dir)
  self.continue_to_exit()
  @@ -96,7 +96,7 @@ class TestVSCode_launch(lldbvscode_testcase.VSCodeTestCaseBase):
  the lldb-vscode debug adaptor.
  '''
  program = self.getBuildArtifact("a.out")
  - program_parent_dir = os.path.split(os.path.split(program)[0])[0]
  + program_parent_dir = os.path.dirname(os.path.dirname(program))
  commands = ['platform shell echo cwd = $PWD']
  self.build_and_launch(program,
  debuggerRoot=program_parent_dir,
  @@ -124,7 +124,7 @@ class TestVSCode_launch(lldbvscode_testcase.VSCodeTestCaseBase):
  Tests the "sourcePath" will set the target.source-map.
  '''
  program = self.getBuildArtifact("a.out")
  - program_dir = os.path.split(program)[0]
  + program_dir = os.path.dirname(program)
  self.build_and_launch(program,
  sourcePath=program_dir)
  output = self.get_console()
  @@ -170,7 +170,7 @@ class TestVSCode_launch(lldbvscode_testcase.VSCodeTestCaseBase):
  enabled.
  '''
  program = self.getBuildArtifact("a.out")
  - program_dir = os.path.split(program)[0]
  + program_dir = os.path.dirname(program)
  glob = os.path.join(program_dir, '*.out')
  self.build_and_launch(program, args=[glob], shellExpandArguments=True)
  self.continue_to_exit()
  @@ -195,7 +195,7 @@ class TestVSCode_launch(lldbvscode_testcase.VSCodeTestCaseBase):
  disabled.
  '''
  program = self.getBuildArtifact("a.out")
  - program_dir = os.path.split(program)[0]
  + program_dir = os.path.dirname(program)
  glob = os.path.join(program_dir, '*.out')
  self.build_and_launch(program,
  args=[glob],
  