Solutions

K7 extension gets installed through Enterprise policy, so that user cannot remove it.

In order to remove the extension, follow the below steps. 

1) Open Run-> Regedit

2) Navigate to ComputerHKEY_LOCAL_MACHINESOFTWAREPoliciesGoogleChromeExtensionInstallForcelist

3) Remove the entries of K7 extensions at Right side (dlpfamleaodfgmfnggonbfljhjggbdbe)

4) Close Chrome browser and reopen, K7 extension would be removed.