Revert changes done in re6b772bbb596137e7f83dabaab46fc501fb6a8f5 - reason: breaks readline-history capability on linux

This is essentially a bug in MySQLs InnoDB database storage engine where connectionhandlers does not decrement the servers threadcount
while trying to exit properly. Bugreport exists on mySQL bugtracker.

--HG--
branch : trunk

src/trinitycore/CliRunnable.cpp

@@ -393,15 +393,6 @@ void CliRunnable::run()
     {
         fflush(stdout);
 
-        // Safe exit thread
-        #ifdef linux
-        while (!kb_hit_return() && !World::IsStopped())
-            // With this, we limit CLI to 10commands/second
-            usleep(100);
-        if (World::IsStopped())
-            break;
-        #endif
-
         char *command_str ;             // = fgets(commandbuf,sizeof(commandbuf),stdin);
 
         #if PLATFORM == WINDOWS