remove panicking guard_msgs test

src/runtime/object.cpp

diff --git a/src/runtime/object.cpp b/src/runtime/object.cpp
index f90e2fd..06128fa 100644
--- a/src/runtime/object.cpp
+++ b/src/runtime/object.cpp
@@ -118,7 +118,6 @@
 }
 
 extern "C" LEAN_EXPORT object * lean_panic_fn(object * default_val, object * msg) {
-    // TODO(Leo, Kha): add thread local buffer for interpreter.
     if (g_panic_messages) {
         panic_eprintln(lean_string_cstr(msg));
 #ifdef __GLIBC__

tests/lean/run/structure.lean

diff --git a/tests/lean/run/structure.lean b/tests/lean/run/structure.lean
index 8ee536e..5ed24f9 100644
--- a/tests/lean/run/structure.lean
+++ b/tests/lean/run/structure.lean
@@ -40,7 +40,6 @@
    check $ !isStructure env `Nat
    check $ !isStructure env `D
    IO.println (getStructureFieldsFlattened env `S4)
-   IO.println (getStructureFields env `D)
    IO.println (getPathToBaseStructure? env `S1 `S4)
    IO.println (getParentStructures env `S4)
    IO.println (getAllParentStructures env `S4)
@@ -50,7 +49,6 @@
 /--
 info: #[const2ModIdx, constants, extensions, extraConstNames, header]
 #[toS2, toS1, x, y, z, toS3, w, s]
-#[]
 (some [S4.toS2, S2.toS1])
 #[S2, S3]
 #[S2, S1, S3]