Revert "rt: Reconfigure the C stack for valgrind each time it's used"

This reverts commit 859e0256524a1f19ca0c79f518d2bb396355f174.

This ended up not fixing the '0 bytes lost' problem and has some performance
impact.

1 files changed, 0 insertions, 1 deletions

diff --git a/src/rt/rust_task_thread.h b/src/rt/rust_task_thread.h
index f82a20a70a2..58ae8aa12f5 100644
--- a/src/rt/rust_task_thread.h
+++ b/src/rt/rust_task_thread.h
@@ -189,7 +189,6 @@ rust_task_thread::borrow_c_stack() {
         your_stack = cached_c_stack;
         cached_c_stack = NULL;
     }
-    prepare_valgrind_stack(your_stack);
     return your_stack;
 }