Revert "[NativeProcessLinux] Integrate MainLoop"

This seems to be causing major slowdows on the android buildbot. Reverting while I investigate.

llvm-svn: 242391
diff --git a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.h b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.h
index 74e3a33..29f3fde 100644
--- a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.h
+++ b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.h
@@ -42,6 +42,9 @@
     //------------------------------------------------------------------
     GDBRemoteCommunicationServerLLGS(const lldb::PlatformSP& platform_sp, MainLoop &mainloop);
 
+    virtual
+    ~GDBRemoteCommunicationServerLLGS();
+
     //------------------------------------------------------------------
     /// Specify the program to launch and its arguments.
     ///