Remove now-unnecessary cleanup functions

include/link/section.hpp

@@ -72,11 +72,6 @@ void sect_AddSection(struct Section *section);
  */
 struct Section *sect_GetSection(std::string const &name);
 
-/*
- * `free`s all section memory that was allocated.
- */
-void sect_CleanupSections(void);
-
 /*
  * Checks if all sections meet reasonable criteria, such as max size
  */

include/link/symbol.hpp

@@ -39,9 +39,4 @@ void sym_AddSymbol(struct Symbol *symbol);
  */
 struct Symbol *sym_GetSymbol(std::string const &name);
 
-/*
- * `free`s all symbol memory that was allocated.
- */
-void sym_CleanupSymbols(void);
-
 #endif // RGBDS_LINK_SYMBOL_H