benchmark: fp16 -> amp (#8422)

* benchmark: fp16 -> amp

* revert

test_tipc/configs/picodet/picodet_lcnet_1_0x_416_coco_train_infer_python.txt

@@ -51,7 +51,7 @@ inference:./deploy/python/infer.py
 null:null
 ===========================train_benchmark_params==========================
 batch_size:90
-fp_items:fp32|fp16
+fp_items:fp32|amp
 epoch:1
 repeat:1
 --profiler_options:batch_range=[10,20];state=GPU;tracer_option=Default;profile_path=model.profile

test_tipc/configs/picodet/picodet_s_320_coco_lcnet_train_infer_python.txt

@@ -51,7 +51,7 @@ inference:./deploy/python/infer.py
 null:null
 ===========================train_benchmark_params==========================
 batch_size:64
-fp_items:fp32|amp
+fp_items:fp32|fp16
 epoch:1
 repeat:1
 --profiler_options:batch_range=[10,20];state=GPU;tracer_option=Default;profile_path=model.profile

test_tipc/configs/picodet/picodet_s_320_coco_train_infer_python.txt

@@ -51,7 +51,7 @@ inference:./deploy/python/infer.py
 null:null
 ===========================train_benchmark_params==========================
 batch_size:64
-fp_items:fp32|fp16
+fp_items:fp32|amp
 epoch:1
 repeat:50
 --profiler_options:batch_range=[10,20];state=GPU;tracer_option=Default;profile_path=model.profile