How to delete Hola launcher on Intex phone?
Launcher3 is the stock launcher. You can't remove it without rooting your device (it might void the warranty).

And, for the Hola launcher. If it's getting automatically downloaded from the Internet (Google Play Store), then you may disable auto app update or restrict background data to prevent it from getting downloaded.

If it's not getting downloaded from the Internet, then I'm afraid it comes pre-installed (bloatware). You can't uninstall those without rooting your device (voids warranty I repeat).