continued work on new register allocator implementation.

next commit will have it integrated if it works

compiler/src/backend/dsa/mod.rs

@@ -4,7 +4,6 @@ mod codegen;
 mod instruction;
 mod registers;
 mod scope;
-mod variable;
 
 pub fn generate_code(ast: &Program) -> Result<String, CompilerError> {
     let mut codegen = codegen::CodeGenerator::new(ast.clone());