Bug 351688 nsCSSFrameConstructor::ContentRemoved has a hopefully useless DEBUG oversafe null check of parentFrame

r=mats.palmgren sr=bz

layout/base/nsCSSFrameConstructor.cpp

@@ -10017,15 +10017,11 @@ nsCSSFrameConstructor::ContentRemoved(nsIContent*     aContainer,
       nsFrame::ListTag(stdout, childFrame);
       printf("\n");
 
-      if (parentFrame) {
       nsIFrameDebug* fdbg = nsnull;
       CallQueryInterface(parentFrame, &fdbg);
       if (fdbg)
         fdbg->List(stdout, 0);
     }
-      else
-        printf("  ==> no parent frame\n");
-    }
 #endif
 
     // Walk the frame subtree deleting any out-of-flow frames, and