fix：彭博指标刷新，移除多余不用的字段

pb_api.py

@@ -19,7 +19,8 @@ def GetEdbDataByPb(EdbCode, StartDate, EndDate):
     bbg.start()
     try:
         rst = bbg.bdh(EdbCode,
-                      ['PX_LAST', 'PE_RATIO', 'PX_TO_BOOK_RATIO', 'EQY_DVD_YLD_12M', 'TURNOVER', 'CUR_MKT_CAP'],
+                      # ['PX_LAST', 'PE_RATIO', 'PX_TO_BOOK_RATIO', 'EQY_DVD_YLD_12M', 'TURNOVER', 'CUR_MKT_CAP'],
+                      ['PX_LAST'],
                       StartDate, EndDate, longdata=True).to_json()
     except:
         rst = pd.DataFrame().to_json()