Remove the GetSequenceMutex timeout that isn't being used in the GDB remote plug-in. 

Also fixed the ProcessLinux, ProcessPOSIX and ProcessFreeBSD to have the correct UpdateThreadList() prototype.

llvm-svn: 154603
diff --git a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunication.cpp b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunication.cpp
index 1535fd4..0d39e98 100644
--- a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunication.cpp
+++ b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunication.cpp
@@ -225,14 +225,9 @@
 }
 
 bool
-GDBRemoteCommunication::GetSequenceMutex (Mutex::Locker& locker, uint32_t usec_timeout)
+GDBRemoteCommunication::GetSequenceMutex (Mutex::Locker& locker)
 {
-    if (usec_timeout == 0)
-        return locker.TryLock (m_sequence_mutex.GetMutex());
-    
-    // Wait for the lock
-    locker.Lock (m_sequence_mutex.GetMutex());
-    return true;
+    return locker.TryLock (m_sequence_mutex.GetMutex());
 }