import os

for root, dirs, files in os.walk(os.getcwd()):
    for _dir in dirs:
        current_dir = os.getcwd() + os.sep + _dir
        for x in os.listdir(current_dir):
            if x.endswith(".xml"):
                # print(current_dir + os.sep + x)
                os.remove(current_dir + os.sep + x)