init: Get rid of fServer flag

There is no need to store this flag globally, the variable is only used
inside the initialization process.

Thanks to Alex Morcos for the idea.

src/util.cpp

@@ -107,7 +107,6 @@ map<string, vector<string> > mapMultiArgs;
 bool fDebug = false;
 bool fPrintToConsole = false;
 bool fPrintToDebugLog = true;
-bool fServer = false;
 string strMiscWarning;
 bool fLogTimestamps = DEFAULT_LOGTIMESTAMPS;
 bool fLogTimeMicros = DEFAULT_LOGTIMEMICROS;