Remove bounding box utils and refactor retinanet

keras_hub/api/__init__.py

@@ -4,7 +4,6 @@
 since your modifications would be overwritten.
 """
 
-from keras_hub.api import bounding_box
 from keras_hub.api import layers
 from keras_hub.api import metrics
 from keras_hub.api import models

keras_hub/api/layers/__init__.py

@@ -5,11 +5,16 @@
 """
 
 from keras_hub.src.layers.modeling.alibi_bias import AlibiBias
+from keras_hub.src.layers.modeling.anchor_generator import AnchorGenerator
+from keras_hub.src.layers.modeling.box_matcher import BoxMatcher
 from keras_hub.src.layers.modeling.cached_multi_head_attention import (
     CachedMultiHeadAttention,
 )
 from keras_hub.src.layers.modeling.f_net_encoder import FNetEncoder
 from keras_hub.src.layers.modeling.masked_lm_head import MaskedLMHead
+from keras_hub.src.layers.modeling.non_max_supression import (
+    NonMaxSuppression as NonMaxSupression,
+)
 from keras_hub.src.layers.modeling.position_embedding import PositionEmbedding
 from keras_hub.src.layers.modeling.reversible_embedding import (
     ReversibleEmbedding,
@@ -55,7 +60,6 @@
 from keras_hub.src.models.resnet.resnet_image_converter import (
     ResNetImageConverter,
 )
-from keras_hub.src.models.retinanet.anchor_generator import AnchorGenerator
 from keras_hub.src.models.retinanet.retinanet_image_converter import (
     RetinaNetImageConverter,
 )