Resolved compile errors

nosh.cpp

@@ -53,12 +53,7 @@ const char VERSION[] = "0.3.2"; ///< Change version number here for the entire c
 #define STRLEN 100 ///< Max string length
 #define WIDTH 10 ///< Width between columns
 
-char vault[STRLEN]; ///< Storing custom info;
-
-deque<std::string> commandHistory;
-const int MAXHISTORY = 50;
-
-int numberOfHistories = 0; ///< Storing the number of histories
+char vault[STRLEN]; ///< Storing custom info
 
 namespace fs = std::filesystem;