removing the X characters prepended ontp the dates in output csvs

coordinator/ProcessorEpidemiology.py

@@ -627,7 +627,7 @@ class ProcessorEpidemiology(Processor):
 
                 # load the full epi results
                 df_full = read_csv(outfile,header=[0],index_col=[0,1])
-                column_date_fmt = f"X{config_epi['StartTimeShort']}_X%Y%m%d%H%M"
+                column_date_fmt = f"{config_epi['StartTimeShort']}_%Y%m%d%H%M"
                 df_full_dates = to_datetime(df_full.columns.astype('str'),format=column_date_fmt)
 
                 unit_description = ''