remove unused code

Author: morganthomas

crates/lean_compiler/src/b_compile_intermediate.rs

@@ -674,56 +674,3 @@ fn compile_function_ret(
         updated_fp: Some(IntermediateValue::MemoryAfterFp { offset: 1.into() }),
     });
 }
-
-fn find_internal_vars(lines: &[SimpleLine]) -> BTreeSet<Var> {
-    let mut internal_vars = BTreeSet::new();
-    for line in lines {
-        match line {
-            SimpleLine::ForwardDeclaration { var } => {
-                internal_vars.insert(var.clone());
-            }
-            SimpleLine::Match { arms, .. } => {
-                for arm in arms {
-                    internal_vars.extend(find_internal_vars(arm));
-                }
-            }
-            SimpleLine::Assignment { var, .. } => {
-                if let VarOrConstMallocAccess::Var(var) = var {
-                    internal_vars.insert(var.clone());
-                }
-            }
-            SimpleLine::TestZero { .. } => {}
-            SimpleLine::HintMAlloc { var, .. }
-            | SimpleLine::ConstMalloc { var, .. }
-            | SimpleLine::DecomposeBits { var, .. } => {
-                internal_vars.insert(var.clone());
-            }
-            SimpleLine::PrivateInputStart { result } => {
-                internal_vars.insert(result.clone());
-            }
-            SimpleLine::RawAccess { res, .. } => {
-                if let SimpleExpr::Var(var) = res {
-                    internal_vars.insert(var.clone());
-                }
-            }
-            SimpleLine::FunctionCall { return_data, .. } => {
-                internal_vars.extend(return_data.iter().cloned());
-            }
-            SimpleLine::IfNotZero {
-                then_branch,
-                else_branch,
-                ..
-            } => {
-                internal_vars.extend(find_internal_vars(then_branch));
-                internal_vars.extend(find_internal_vars(else_branch));
-            }
-            SimpleLine::Panic
-            | SimpleLine::DecomposeCustom { .. }
-            | SimpleLine::Print { .. }
-            | SimpleLine::FunctionRet { .. }
-            | SimpleLine::Precompile { .. }
-            | SimpleLine::LocationReport { .. } => {}
-        }
-    }
-    internal_vars
-}