[rpc] Remove deprecated getmininginfo RPC option

Author: jnewbery

src/rpc/mining.cpp

@@ -201,7 +201,6 @@ UniValue getmininginfo(const JSONRPCRequest& request)
             "  \"pooledtx\": n              (numeric) The size of the mempool\n"
             "  \"chain\": \"xxxx\",           (string) current network name as defined in BIP70 (main, test, regtest)\n"
             "  \"warnings\": \"...\"          (string) any network and blockchain warnings\n"
-            "  \"errors\": \"...\"            (string) DEPRECATED. Same as warnings. Only shown when bitcoind is started with -deprecatedrpc=getmininginfo\n"
             "}\n"
             "\nExamples:\n"
             + HelpExampleCli("getmininginfo", "")
@@ -219,11 +218,7 @@ UniValue getmininginfo(const JSONRPCRequest& request)
     obj.push_back(Pair("networkhashps",    getnetworkhashps(request)));
     obj.push_back(Pair("pooledtx",         (uint64_t)mempool.size()));
     obj.push_back(Pair("chain",            Params().NetworkIDString()));
-    if (IsDeprecatedRPCEnabled("getmininginfo")) {
-        obj.push_back(Pair("errors",       GetWarnings("statusbar")));
-    } else {
-        obj.push_back(Pair("warnings",     GetWarnings("statusbar")));
-    }
+    obj.push_back(Pair("warnings",         GetWarnings("statusbar")));
     return obj;
 }