import re
array= ['AB.01.001 Hello','BA.10.004','CD.10.015 Good bye']
regex = re.compile(r'[A-Z]{2,3}\.[0-9]{2}\.[0-9]{3}\s*')
filtered = filter(None, map(lambda i: regex.sub('', i), array))
print(list(filtered))
aW1wb3J0IHJlCmFycmF5PSBbJ0FCLjAxLjAwMSBIZWxsbycsJ0JBLjEwLjAwNCcsJ0NELjEwLjAxNSBHb29kIGJ5ZSddCnJlZ2V4ID0gcmUuY29tcGlsZShyJ1tBLVpdezIsM31cLlswLTldezJ9XC5bMC05XXszfVxzKicpCmZpbHRlcmVkID0gZmlsdGVyKE5vbmUsIG1hcChsYW1iZGEgaTogcmVnZXguc3ViKCcnLCBpKSwgYXJyYXkpKQpwcmludChsaXN0KGZpbHRlcmVkKSk=