Remove annoying assertion when starting tab child process

content/base/src/nsFrameLoader.cpp

@@ -1089,7 +1089,6 @@ nsFrameLoader::TryNewProcess()
     return PR_FALSE;
   }
 
-  NS_ERROR("trying to start new process");
   nsAutoString value;
   mOwnerContent->GetAttr(kNameSpaceID_None, nsGkAtoms::type, value);