remove unused code from misc

tools/misc.py

@@ -8,16 +8,6 @@ import os.path as op
 from urllib.request import urlretrieve
 
 
-def download_from_url(url, filename, logger, folder="./models/"):
-    model_filename = op.realpath(op.join(folder, filename))
-    if not op.exists(model_filename):
-        logger.info('---Downloading: '+filename)
-        urlretrieve(url, model_filename)
-    else:
-        logger.info('---File already downloaded.')
-    return model_filename
-
-
 class ResizeForCenterNet(object):
     def __init__(self, fix_res=False):
         self.fix_res = fix_res