I recently had to do a factory reset on my phone, and subsequently I lost all the previous GOOGLE AUTH codes including Blockchain.
I requested to remove the 2 step verification on my account, confirmation email has been received.
I clicked 'Approve Request' button from received email, and it confirmed, but they continually asking my GOOGLE AUTH code when I log in.
Can anyone help me with this???

I guess it does not disable your google auth since it ask you the 2fa. For this issue you should contact the support for this since blockchain.info support only can disable the 2fa on your account since it's their platform. Tell them all you did but you still encounter and asked the google auth when logged.