Revert "[LLDB] Fix the use of "platform process launch" with no extra arguments"

This reverts commit cc0fc35 due to a failure
reported on MacOS.

Author: DavidSpickett

lldb/source/Commands/CommandObjectPlatform.cpp

@@ -1207,12 +1207,8 @@ class CommandObjectPlatformProcessLaunch : public CommandObjectParsed {
       if (m_options.launch_info.GetExecutableFile()) {
         Debugger &debugger = GetDebugger();
 
-        if (argc == 0) {
-          // If no arguments were given to the command, use target.run-args.
-          Args target_run_args;
-          target->GetRunArguments(target_run_args);
-          m_options.launch_info.GetArguments().AppendArguments(target_run_args);
-        }
+        if (argc == 0)
+          target->GetRunArguments(m_options.launch_info.GetArguments());
 
         ProcessSP process_sp(platform_sp->DebugProcess(
             m_options.launch_info, debugger, *target, error));