Kernel: Do not hang when a user task misbehaves

This was for testing/debugging. But we DEFINITELY don't want that.

kernel/src/interrupts/Entry.cpp

@@ -51,8 +51,6 @@ extern "C" void common_handler(Context* context)
             StackTracer tracer(context->rbp);
             tracer.trace_with_ip(context->rip);
 
-            hang(); // FIXME: Remove this when multiple address spaces are working.
-
             Scheduler::task_misbehave(context, -3);
         }
     }