Add -B/--backtrace option to RGBASM and RGBLINK (#1787)

include/link/main.hpp

@@ -4,13 +4,6 @@
 #define RGBDS_LINK_MAIN_HPP
 
 #include <stdint.h>
-#include <stdio.h>
-#include <string>
-#include <variant>
-#include <vector>
-
-#include "linkdefs.hpp"
-#include "verbosity.hpp"
 
 struct Options {
 	bool isDmgMode;              // -d
@@ -32,27 +25,4 @@ struct Options {
 
 extern Options options;
 
-struct FileStackNode {
-	FileStackNodeType type;
-	std::variant<
-	    std::monostate,        // Default constructed; `.type` and `.data` must be set manually
-	    std::vector<uint32_t>, // NODE_REPT
-	    std::string            // NODE_FILE, NODE_MACRO
-	    >
-	    data;
-
-	FileStackNode *parent;
-	// Line at which the parent context was exited; meaningless for the root level
-	uint32_t lineNo;
-
-	// REPT iteration counts since last named node, in reverse depth order
-	std::vector<uint32_t> &iters() { return std::get<std::vector<uint32_t>>(data); }
-	std::vector<uint32_t> const &iters() const { return std::get<std::vector<uint32_t>>(data); }
-	// File name for files, file::macro name for macros
-	std::string &name() { return std::get<std::string>(data); }
-	std::string const &name() const { return std::get<std::string>(data); }
-
-	std::string const &dump(uint32_t curLineNo) const;
-};
-
 #endif // RGBDS_LINK_MAIN_HPP