I had previously posted about the Blue ticks in WhatsApp. Well, if you are troubled by the feature and want to disable the read receipt feature then follow these steps:
Download WhatsApp.apk from the Official WhatsApp website. (You will get the latest version that are not yet released on the Play Store)
Install this on your Android Device and then Follow the steps to enter account number and restore messages. WhatsApp will be updated if it is already installed on your device.
Now Goto Settings->Account->Privacy and deselect read receipts option.
Enjoy and happy WhatsApping 🙂
P.S: Always make a backup of your chats before installing WhatsApp.
Let the Windows be open, and feel the Freedom.