remove test code, test=doc

paddlespeech/server/tests/tts/infer/run.sh

-model_path=~/.paddlespeech/models/
-am_model_dir=$model_path/fastspeech2_csmsc-zh/fastspeech2_cnndecoder_csmsc_ckpt_1.0.0/   
-voc_model_dir=$model_path/mb_melgan_csmsc-zh/mb_melgan_csmsc_ckpt_0.1.1/    
-testdata=../../../../t2s/exps/csmsc_test.txt
-
-# get am file
-for file in $(ls $am_model_dir)
-do
-    if [[ $file == *"yaml"* ]]; then
-        am_config_file=$file
-    elif [[ $file == *"pdz"* ]]; then
-        am_ckpt_file=$file
-    elif [[ $file == *"stat"* ]]; then
-        am_stat_file=$file
-    elif [[ $file == *"phone"* ]]; then
-        phones_dict_file=$file
-    fi
-    
-done
-
-# get voc file
-for file in $(ls $voc_model_dir)
-do
-    if [[ $file == *"yaml"* ]]; then
-        voc_config_file=$file
-    elif [[ $file == *"pdz"* ]]; then
-        voc_ckpt_file=$file
-    elif [[ $file == *"stat"* ]]; then
-        voc_stat_file=$file
-    fi
-    
-done
-
-
-# run test
-# am can choose fastspeech2_csmsc or fastspeech2_cnndecoder_csmsc, where fastspeech2_cnndecoder_csmsc supports streaming inference.
-# voc can choose hifigan_csmsc and mb_melgan_csmsc, They can both support streaming inference.
-# When am is fastspeech2_cnndecoder_csmsc and am_pad is set to 12, there is no diff between streaming and non-streaming inference results.
-# When voc is mb_melgan_csmsc and voc_pad is set to 14, there is no diff between streaming and non-streaming inference results.
-# When voc is hifigan_csmsc and voc_pad is set to 20, there is no diff between streaming and non-streaming inference results.
-
-python test_online_tts.py --am fastspeech2_cnndecoder_csmsc \
-                          --am_config $am_model_dir/$am_config_file \
-                          --am_ckpt $am_model_dir/$am_ckpt_file \
-                          --am_stat $am_model_dir/$am_stat_file \
-                          --phones_dict $am_model_dir/$phones_dict_file \
-                          --voc mb_melgan_csmsc \
-                          --voc_config $voc_model_dir/$voc_config_file \
-                          --voc_ckpt $voc_model_dir/$voc_ckpt_file \
-                          --voc_stat $voc_model_dir/$voc_stat_file  \
-                          --lang zh \
-                          --device cpu \
-                          --text $testdata \
-                          --output_dir ./output \
-                          --log_file ./result.log \
-                          --am_streaming True \
-                          --am_pad 12 \
-                          --am_block 42 \
-                          --voc_streaming True \
-                          --voc_pad 14 \
-                          --voc_block 14 \
-