remove the mReconstructionMutex in load

During loading of snapshot, there will be a single-threaded
decoder that aquires the same mReconstructionMutex, repeatedly.
Since the mReconstructionMutex is intentionally changed to
be non-recursive, we should not aquire it at the beginning of
load call; otherwise, we will be deadlock the decoder thread.

Reviewed-by: Marcin Radomski <dextero@google.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33018>

src/gfxstream/codegen/scripts/cereal/decodersnapshot.py

@@ -68,7 +68,6 @@ public:
     }
 
     void load(android::base::Stream* stream, GfxApiLogger& gfx_logger, HealthMonitor<>* healthMonitor) {
-        std::lock_guard<std::mutex> lock(mReconstructionMutex);
         mReconstruction.load(stream, gfx_logger, healthMonitor);
     }