delete unnecessary file

device/testing/device-samsung-gtexswifi/modules-initfs

-# Remove this file if unnecessary (CHANGEME!)
-# This file shall contain a list of modules to be included in the initramfs,
-# so that they are available in early boot stages. In general, it should
-# include modules to support unlocking FDE (touchscreen, panel, etc),
-# USB networking, and telnet in the debug-shell.
-# The format is one module name per line. Lines starting with the character
-# '#', and empty lines are ignored. If there are multiple kernel variants
-# with different initramfs module requirements, one modules-initfs.$variant
-# file should be created for each of them.