!4420 [MS][LITE][Develop]remove the operation of free the tmp buffer when run over

Merge pull request !4420 from chenjianping/lite_dev

mindspore/lite/src/runtime/kernel/arm/fp32/argminmax.cc

@@ -54,7 +54,6 @@ int ArgMinMaxCPUKernel::Run() {
     return ret;
   }
   ret = ArgMinMaxBaseCPUKernel::Run();
-  ArgMinMaxBaseCPUKernel::FreeTmpMemory();
   return ret;
 }
 }  // namespace mindspore::kernel

mindspore/lite/src/runtime/kernel/arm/fp32/scale.cc

@@ -173,7 +173,6 @@ int ScaleCPUKernel::Run() {
     MS_LOG(ERROR) << "Scale error error_code[" << ret << "]";
     return RET_ERROR;
   }
-  FreeTmpBuffer();
   return RET_OK;
 }
 

mindspore/lite/src/runtime/kernel/arm/int8/argminmax_int8.cc

@@ -80,7 +80,6 @@ int ArgMinMaxInt8CPUKernel::Run() {
       Int8ArgMinMaxDim3(input_data, output_data, in_shape, param, &in_quant_arg_, &out_quant_arg_);
       break;
   }
-  FreeTmpMemory();
   return RET_OK;
 }
 }  // namespace mindspore::kernel