sbbs_t::fremove() will now, by default, ignore (not log) ENOENT errors

ENOENT = "No such file or directory"

Passing 'true' for the optional 'log_all_errors' parameter overrides this
(logs all errors, including ENOENT).

src/sbbs3/sbbs.h

@@ -1257,9 +1257,9 @@ public:
 	void	errormsg(int line, const char* function, const char *source, const char* action, const char *object
 				,int access=0, const char *extinfo=NULL);
 	bool	hacklog(const char* prot, const char* text);
-	void	fremove(int line, const char* function, const char *source, const char* path) {
+	void	fremove(int line, const char* function, const char *source, const char* path, bool log_all_errors = false) {
 		int result = remove(path);
-		if(result != 0)
+		if(result != 0 && (log_all_errors == true || errno != ENOENT))
 			errormsg(line, function, source, ERR_REMOVE, path);
 	}