How to remove guest and user accounts from Lenovo a7000

How to remove the guest and user accounts from lenovo a7000 and other devices.(  Reversible- You can reverse the steps if you want the accounts back on your device)
Status: self-tried successfully on my Lenovo a7000.
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First things first:
1)Root your phone( for instructions head over to the xda thread " Lenovo a7000 development "
2) Back up your rom to external as card using Clock Work Mod(CWM) or Team Win Recovery Project (TWRP)

Steps to remove guest and user accounts:

1) go to device-system and locate the .txt file build- prop.
2)  copy the build-prop file to your sd card in case you need to get rid of the changes(you are going to make) by simply replacing it with the modified one.
3) going back to system folder open and edit the build- prop file using es file explorer (or any root file explorer) and add the below given line exactly as it is as the last line (so that you can easily navigate to the line and remove it if you want to)

fw.max_users=1

4)Save the file and close the file manager.
5) install "SqLite editor" app and opening it navigate to  files/data/data/com.android.providers.settings/databases/ settings.db folder.
6)Open the settings.db folder and go to "global” tab and locate the entry ‘guest_user_enabled’( entry no:45)
7) click on "guest_user_enabled" and change its value to zero by clicking the pencil sign above.
8)Once done, save and exit the SQLite editor app.
Reboot your phone.
Guest and Multi-User accounts feature will be gone from your phone good.
If you want the deleted accounts back on your device, just reverse the process.
Footnote
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I am not the original author of this valuable piece of information. The original post link is given below.
http://www.theandroidsoul.com/how-to-disable-guest-multi-user-accounts-on-android-lollipop-76142/