Stop always storing blocks from whitelisted peers

There is no reason to wish to store blocks on disk always just
because a peer is whitelisted. This appears to be a historical
quirk to avoid breaking things when the accept limits were added.

src/net_processing.cpp

@@ -2480,11 +2480,7 @@ bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStr
 
         LogPrint(BCLog::NET, "received block %s peer=%d\n", pblock->GetHash().ToString(), pfrom->GetId());
 
-        // Process all blocks from whitelisted peers, even if not requested,
-        // unless we're still syncing with the network.
-        // Such an unrequested block may still be processed, subject to the
-        // conditions in AcceptBlock().
-        bool forceProcessing = pfrom->fWhitelisted && !IsInitialBlockDownload();
+        bool forceProcessing = false;
         const uint256 hash(pblock->GetHash());
         {
             LOCK(cs_main);