diff --git a/sam3.cpp b/sam3.cpp
index 8adc8b2..9b90bf4 100644
--- a/sam3.cpp
+++ b/sam3.cpp
@@ -8111,19 +8111,6 @@ static struct ggml_tensor* sam3_inverse_sigmoid(struct ggml_context* ctx, struct
     return ggml_sub(ctx, log_x, log_1mx);
 }
 
-// Box refinement MLP (3 layers: D→D→D→4 with ReLU)
-static struct ggml_tensor* sam3_bbox_mlp(struct ggml_context* ctx,
-                                         struct ggml_tensor* x,
-                                         struct ggml_tensor* w[3],
-                                         struct ggml_tensor* b[3]) {
-    for (int j = 0; j < 3; ++j) {
-        x = ggml_mul_mat(ctx, w[j], x);
-        x = ggml_add(ctx, x, b[j]);
-        if (j < 2) x = ggml_relu(ctx, x);
-    }
-    return x;
-}
-
 // Build sinusoidal positional embedding for 4D reference points in the ggml graph.
 // ref_boxes: [4, NQ, B] — (cx, cy, w, h) after sigmoid, B=1
 // sine_dim_t: [1, 64] — pre-computed angle multipliers (2π / 10000^(2i/128))
diff --git a/sam3.h b/sam3.h
index 204e487..4473b8e 100644
--- a/sam3.h
+++ b/sam3.h
@@ -35,7 +35,6 @@ using sam3_tracker_ptr = std::unique_ptr<sam3_tracker,  sam3_tracker_deleter>;
 
 enum sam3_model_type {
     SAM3_MODEL_SAM3        = 0,  // Full SAM3 (ViT + detector + tracker)
-    SAM3_MODEL_SAM3_VISUAL = 1,  // SAM3 visual-only (ViT + tracker, no text)
     SAM3_MODEL_SAM2        = 2,  // SAM2 (Hiera + tracker, no text/detector)
     SAM3_MODEL_EDGETAM     = 3,  // EdgeTAM (RepViT + Perceiver, no text/detector)
 };
@@ -97,7 +96,6 @@ struct sam3_params {
     std::string model_path;
     int         n_threads       = 4;
     bool        use_gpu         = true;
-    int         seed            = 42;
     int         encode_img_size = 0;  // 0 = model default; override input resolution
 };