The problem with the Installer. (The Elder Scrolls 5: Skyrim)

The brother asked him to throw through Google drive(I don't know why he insists so I just downloaded Google drive and including a common access), the installer of Skyrim, though the disk is only 7 GB and the installer itself weighs 9.57 GB.
I decided to remove these files:
1. dataHD(HD textures)
2.eng(English)
Will the installer work fine without these files?
If there is an error, just apologize, I'm not a master in computers.