libstagefright_aidl_bufferpool2: avoid list<const T>

A container of const T uses std::allocator<const T>, which was an
undocumented libc++ extension that has been removed.

See https://github.com/llvm/llvm-project/pull/96319.

Bug: 349681543
Test: m libstagefright_aidl_bufferpool2
Change-Id: I6491377d6275c5d18cd91b40184d6f05cff7cb9a
diff --git a/media/bufferpool/aidl/default/Accessor.cpp b/media/bufferpool/aidl/default/Accessor.cpp
index 423fd84..81e8eac 100644
--- a/media/bufferpool/aidl/default/Accessor.cpp
+++ b/media/bufferpool/aidl/default/Accessor.cpp
@@ -444,7 +444,7 @@
         std::map<const std::weak_ptr<Accessor>, nsecs_t, std::owner_less<>> &accessors,
         std::mutex &mutex,
         std::condition_variable &cv) {
-    std::list<const std::weak_ptr<Accessor>> evictList;
+    std::list<std::weak_ptr<Accessor>> evictList;
     while (true) {
         int expired = 0;
         int evicted = 0;