Revert "fixed typo" and "fixed crash for Windows"

This reverts commits c8a80a497d and f7791e5289

This didn't actually fix Windows crash problem. In fact, it still
crashed without --log=0 being set. Changes to the i2pd.vcxproj file
fixed the crashes with VS 2013 > update 1.  i2pd now works with VS 2013
Update 3 and Update 4 RC.

Since these changes didn't have the intended effect, let's remove them.

Log.cpp

@@ -20,11 +20,8 @@ void LogMsg::Process()
 
 void Log::Flush ()
 {
-#ifndef _WIN32	
 	if (m_LogFile)
 		m_LogFile->flush();
-#endif
-// TODO: find out what's wrong with flush for Windows	
 }
 
 void Log::SetLogFile (const std::string& fullFilePath)